
   Version 0.7.15 -- September 3, 2017
 - Fix superfluous libraries and includes during install when using $DESTDIR,
   addressing github issue #21.
 - Made screen size functions use 16-bit instead of 8-bit values, allowing
   version 5+ games to work with screen dimensions > 255.
 - In case of screen dimensions > 255, write 255 into the byte-sized header
   entries $20 and $21.
 - Fix compile-time error which occurred when --disable-output-history was
   set. Thanks to Jared Reisinger for the patch.
 - Added missing contributor phrasing to BSD-3 clause. The resulting license
   now exactly matches the wording used on Github and so also makes the
   license detection work.

   Version 0.7.14 -- April 8, 2017
 - User input for read_char is now supported in stream 4. Thanks to Michael
   Baltes for the initial implementation.
 - Fix for crashes on startup when loading hyphenation patterns und
   localiazation data for machines which have chars as unsigned types. Thanks
   to Lewis Gentry for the patch.
 - Fixed possible crash when invoking read_char with a non-zero verification
   routine address. Thanks to Stephen Gutknecht for reporting the problem.
 - Replaced en_US locale with en_GB due to license issues with the US
   hyphenation patterns from the "hyph-utf8" package for the time being.
   Adapted localization aliases so any current configuration should be still
   working without problems.
 - Fixed missing repeat-paragraph-output in case buffer back was encountered
   in output history. This fixes the initial missing line of text in
   "eliza.z5".
 - Added detection whether supplied story file is a valid Z-Machine file or a
   blorb file containing a "ZCOD" chunk and show error message if it's not
   the case.
 - Added "is_history_empty" method as helper for libpixelif.
 - Fixed "delete_list_and_get_null_terminated_ptrs" for empty lists.

   Version 0.7.13 -- October 8, 2016
 - Fixed a crash which occurred after entering an invalid filename for the
   /fileinput command and then re-invoking the same command. Thanks to
   Michael Baltes for reporting the problem.
 - Improved build system for separate library and interface builds.

   Version 0.7.12 -- August 31, 2016
 - In the context of the Debian Reproducible Builds, building libfizmo is now
   reproducible, see https://wiki.debian.org/ReproducibleBuilds. Thanks to
   Sascha Steinbiss for the patch.
 - Use tiny-xml-doc-tools for documentation files.
 - Cleaned up versioning mess a little bit: Removed FIZMO_VERSION, use
   LIBFIZMO_VERSION instead, since this is more helpful if libfizmo is used
   stand-alone.

   Version 0.7.11 -- July 28, 2016
 - Fix segfault in case metadata is written to output history when screen
   interface is not open.
 - Added write/read of last paragraph_attributes.
 - Implement init for config default values.

   Version 0.7.10 -- October 9, 2015
 - Adapted print_table opcode to work in lower window. This fixes output
   errors in "Sherlock".
 - Fix for Debian bug #795800: When the ncurses screen is resized when
   Inform's menu library displays hints or instructions fizmo will no longer
   exit and complain about an error in the "output_rewind_paragraph"
   function. Thanks to Lewis Gentry for reporting this problem.
 - Implemented "flush-output-on-newline" configuration option. This will
   ensure that any output is flushed to history and interface before a
   newline. This allows interfaces to store paragraph-relevant attributes in
   the history with minor fuzz (which is used by fizmo-sdl).
 - Added new metadata-type "paragraph attribute" for the purpose described
   above, along with auxiliary callbacks "paragraph_attribute_function" and
   "paragraph_removal_function" which are invoked from the history.
 - Minor changes in processing when converting font 3 to unicode.
 - Fixed possible garbled upper window after erase_window(-1) invocation.
 - Minor fixes for lib detection, will remove some warnings and possible some
   build issues on linux.
 - Fix in history/remove_chars_from_history.
 - Fix for missing prompt after interpreter commands.
 - Implemented "alter_last_paragraph_attributes".
 - Implemented backwards-history reading.
 - Minor extensions and bugfixes to history.
 - Fix for erroneous upper window text in history.

   Version 0.7.9 -- May 25, 2014
 - Fixed conflicting array-size in zpu.h / zpu.c which could result in
   invalid memory assumptions by the compiler. Thanks to Michael Tautschnig.

   Version 0.7.8 -- March 19, 2014
 - Fixed missing lowering of input case for versions >= 5, thanks to irb.
 - Adapted to automake v1.14 and fixed compiler warning.
 - Fixed "encode_text" and tokenizing for cases in which the
   "unrecognized"-flag is set. This fixes a bug with the "name" spell in
   Beyond Zork, thanks to irb.
 - Fixed "AC_CONFIG_AUX_DIR" invocation.
 - Fixed wrapping of long lines without spaces as in ASCII art. Thanks to
   David Batchelder for pointing out the problem.
 - Made output_rewind_paragraph count rewound chars. This makes refereshing
   the screen a bit easier for the ncursesw interface.
 - After a restore, the current screensize is now written into the header.
   This should correct upper windows display problems after loading of
   savegames.
 - Added "clean-dev" build target for better cleanup of installed development
   files, which helps debian packaging.
 - When breaking long lines, multiple spaces are now skipped at the linebreak
   point to avoid superfluous spaces at the start of the next line. Thanks to
   Lewis Gentry.
 - Fixed UTF-8 for input from file. Thanks to Mikko Torvinen for reporting
   the bug.

   Version 0.7.7 -- June 5, 2013
 - Fixed wordwrapper for cases in which text was written on the same line as
   read_char was invoked. This makes output of multiline-hints in PRIZM's
   Invisiclues work. Thanks to David Batchelder.
 - Renamed getchar, getchars and ungetchars from the file system interface to
   readchar, readchars and unreadchars. This makes fizmo compile on systems
   where getchar() is implemented as a macro.
 - Added missing evalation of fixed-pitch font flag in the flags2 header.
 - Altered close_interface function to allow z_mem access during shutdown.
 - Fixed several compiler warnings.
 - Invoking "/config" without setting color defaults will no longer crash the
   interpreter.
 - Added z_rgb_colour datatype.
 - Renamed "install-locales" into "install-data-local" build target.
 - Other minor bugfixes.

   Version 0.7.6 -- December 27, 2012
 - Reparied "math.h" name collision, fixing missing "rint" function
   declaration.
 - Fixed universal builds on Mac OS X.
 - Fixed warning in "cmd_hst" compilation.
 - Searching for z-code files will now automatically create ~/.config/fizmo
   so that search results are no longer lost, thanks to B. Watson.

   Version 0.7.5 -- November 30, 2012
 - Fix for preloaded input removal, thanks to Lewis Gentry.
 - Fixed missing characters in transcripts.
 - Fixed swallowing of dots, commas and quotation marks at line starts in
   case hyphenation is disabled -- thanks to Lewis Gentry.
 - Fixed crash which occurred when invoking fizmo-ncursesw with the "-fi"
   flag, also thanks to Lewis Gentry.
 - Colors are now correctly set for all windows on screen in case no window
   is specified for @set_colour.
 - Re-implemented line-wrapper, fixing several issues.
 - Fix for memory corruption in command-history, thanks to Lewis Gentry.

   Version 0.7.4 -- August 17, 2012
 - Implemented new build system based on autoconf/automake.

   Version 0.7.3 -- August 1, 2012
 - Merged Andrew Plotkin's iOS-fizmo changes: No more raw exit() calls, added
   screeninterface-specific filename prompt, new screeninterface-specific
   filename prompt replaces fizmo_register_ask_user_for_file_function, fixed
   autosave-functionality, added "disable-stream-2-wrap" and "max-undo-steps"
   config option and fix for an overlong property issue that made "Heist"
   crash.
 - Implemented memory-cleanup and fixed variable states after story end to
   allow fizmo_start() to be called repeatedly.
 - Fixed some minor memory leaks.
 - Fixed segfault which would occur after storing 10240 undo steps.
 - Added new option to set number of maximum stored undo steps.
 - Changed blockbuffer initialization to allow for output at any time, made
   fizmo_new_screen_size adapt blockbuffer size correctly.
 - Fixed a buffer overflow during tokenization, thanks for Andrew Plotkin.
 - Implemented binary chop dictionary search.

   Version 0.7.2 -- March 9, 2012
 - Made fizmo comply to "praxix.z5" test.
 - Merged zarf's DISABLE_PREFIX_COMMANDS functionality.
 - Fixed missing $(DESTDIR) variable -- should already have been present
   since version 0.7.1.
 - Fixed an error which would occur for empty pathnames when starting up a
   game on 32-bit platforms, thanks to Samuel Verschelde.
 - The transcription and fixed font bits will now correctly survive a
   restore, as defined in the Z-Maschine standard.

   Version 0.7.1 -- November 6, 2011
 - Fixed missing "override" statments for CFLAGS in Makefiles.
 - Fixed $(DESTDIR) evaluation in config.[default|macports].mk.
 - Adapted Makefiles and configuration to use standard GNU Makefile variables
   instead of INSTALL_PATH and FIZMO_BIN_DIR.
 - Fixed an error in the stack restoration in "opcode_restore_undo". Thanks
   to Lewis Gentry for reporting this bug.
 - Implemented first debugger stubs. The debugger is available via network
   socket and will currently only dump PC, locals and stack contents.

   Version 0.7.0 -- September 18, 2011
 - Module name change: The ncursesw- and console-interface, the sdl-sound
   interface and the X11-specific code have been moved into separate modules
   named "fizmo-ncursesw", "fizmo-console", "libsndifsdl" and "libdrilbo".
   This module has been renamed from "fizmo" to "libfizmo", providing only
   the base interpreter functionality without any interface.
 - Implemented Frank Liangs TeX hy-phen-a-tion algorithm into the
   wordwrapper. Patterns were taken from the "hyph-utf8" project at
   http://www.ctan.org/tex-archive/language/hyph-utf8/. Re-implemented the
   word wrapper.
 - Rebuilt locales system. So far, all available locales were directly
   compiled into the binary and stored using a rather inflexible method which
   wasted some memory. Version 0.7.0 now stores the locales on the disk,
   reading only those languages and modules which are currently required. All
   i18n-invocations do now directly accept a module identifier, make the old
   switch functionality obsolete. Adapted all i18n calls to new method.
 - Rebuilt output history storage. This has been reimplemented using a single
   memory stream instead of storing text and metadata separately.
 - Moved "i18n", "tracelog", "z_ucs" and "types" into a new "tools" package
   adding "stringmap", "list" and "tools_test" on the way. The tools package
   is supposed to be used by interpreter-related tools which don't require
   the interpreter itself.
 - Rebuilt the interpreter core of fizmo into a set of static libraries.
 - Implemented saving of text history using a non-standard chunk type "TxHs"
   in quetzal savegames.
 - Added configuration variable "save-text-history-paragraphs" which defines
   the maximum number of paragraphs to store in a savegame.
 - Added variable interpretation -- so far, only $(HOME) is implemented --
   for config files.
 - Re-implemented the entire build process. Libraries may now be compiled and
   installed on their own, pkg-config is used whereever possible to ease
   compilation and installation.

   Version 0.6.9 -- April 24, 2011
 - Bugfix release: Fixed negative count for unsorted dictionaries in the
   tokenise opcode. This fixed the crash in "Beyond Zork" which occurred
   while executing "i" after an item was name, thanks to irb.
 - Fixed "get_utf8_code_length". This fixes output of non-latin1 output codes
   in the transcript file, thanks to Lewis Gentry, closes debian issue
   #617714.
 - Increased maximum allowed option size to 512 to allow for longer
   filenames.
 - Added NCURSESW_INCLUDE_FROM_W_DIRNAME to configs to allow usage of Apple's
   ncurses implementation, added GDKPIXBUF_INC_DIR configuration variable.

   Version 0.6.8 -- January 12, 2010
 - Bugfix release: Interpreter and interface information is now correctly
   written into the header after restarting, additionally the input length
   for transcript and command input/output-stream filenames has been fixed.
   Thanks to Samuel Verschelde.
 - Added "sync-transcript" option: When enabled, it'll flush the wordwrapper
   and file output buffer as soon as possible.

   Version 0.6.7 -- December 14, 2009
 - Fixed trunction of babel data input. So far, the last byte was cut off
   from the input, resulting in an error if the file was encoded using unix
   newlines, but no errors as long as DOS newlines were used. This fixes
   missing metadata issues in the story browser. Thanks again to Zachary
   Kline.

   Version 0.6.6 -- December 14, 2009
 - Fixed story browser to remove ".zblorb" suffixes from story titles which
   are not backed by babel information and evaluated from the filename. This
   will only work for new stories which are added to the list, to re-index
   your current story-list the old file has to be removed and re-built. "rm
   $HOME/.config/fizmo/story-list.txt" should be run first, followed by the
   command "fizmo -u". Thanks to Zachary Kline.
 - Minimal changes to the seeding of math.c's "srand" and "init_by_array" in
   hopes of increasing input entropy.

   Version 0.6.5 -- October 13, 2009
 - Bugfix release: Recommend for MacPorts, will make compiling work for
   parallel builds in MacPorts version 1.8.0+.
 - Transcription will be kept active after restarts, thanks to Samuel
   Verschelde.
 - Fixed Makefiles for parallel builds (make -j).

   Version 0.6.4 -- May 24, 2009
 - Bugfix release: Definitely recommend for read_char fix.
 - Fixed interface to supply default colors in case ncurses' "pair_content"
   returned invalid colors (thanks to Samuel Verschelde).
 - Input from read_char is no longer re-echoed to the screen (thanks to
   Samnuel Verschelde).

   Version 0.6.3 -- April 26, 2009
 - The top-level Makefile may now be invoked with "CONFIG_FILE=<filename>".
 - Adapted "config.macos.mk" to MacPorts portfiles and ports-filesystem so
   that fizmo is now easily MacPorts-buildable.
 - Added license information to every file.
 - Improved GNU coding compliance: install now goes to "($DESTDIR)/usr".

   Version 0.6.2 -- April 25, 2009
 - Bugfix release: Corrected save opcode and prepared for debianization.
 - Adapted manpage to make lintian work.
 - Corrected "src/c/interface.h".
 - Fixed typo in manpage.
 - Fixed save opcode to not wrap data into IFF and to disable compression
   when only a table from memory is saved (operands 2 and 3 for address and
   length are set). This fixes "Comp96.z5".

   Version 0.6.1 -- March 30, 2009
 - Bugfix release: minor addition of several features (may now compile
   without libsndfile and libSDL alone, implemented XDG base directory
   specification).
 - Removed unused references to SDL-mixer (which isn't used for anything
   anymore).
 - Improved and documented default "config.*.mk" files and added config
   default for cygwin with sound support (to my own great surprise, sound
   really works under Cygwin).
 - Added more information to "INSTALL.txt".
 - Implemented new ENABLE_AIFF_FOR_SOUND_SDL variable in config files. This
   allows the sound-sdl-interface to at least play Infocom .snd files when no
   libsndfile is available.
 - Added config-file options to manpage.
 - Changed location of fizmo config directory from fixed "$HOME/.fizmo" to
   XDG_CONFIG_HOME standard and implemented use of XDG_CONFIG_DIRS. Thanks
   for suggestions and debugging help from Eric Forgeot. Specifications and
   more information found at
   http://freedesktop.org/wiki/Software/xdg-user-dirs.
 - Fixed broken space allocation, forgotten NULL-checks and fixed some issues
   to make frontispiece work better on GenToo. Thanks for these patches from
   David Leverton (see also line #50 in "src/ncursesw/Makefile"). This fixes
   possible startup crashes.
 - Added FIZMO_BIN_DIR variable to Makefile.

   Version 0.6.0 -- March 25, 2009
 - (find c cgi cpp fizmo ncursesw simple-c simple-cpp single-turn sound-sdl
   -type f -name '*.c' -or -name '*.cpp' -or -name '*.h' | xargs cat | wc -l
   resulted in 29953 lines of output)
 - This marks the point for the first public beta release. Killed all known
   bugs as far as I could find them and made fizmo work on Linux -- tested
   with a 64-bit distribution of Debian/Lenny -- and Mac OS X 10.5 with a
   32-bit Intel machine and MacPorts for SDL. New features since version 0.5
   include an SDL-based sound interface, support for charachter font via
   unicode translation, partial (z)blorb-support -- runs code from blorbs,
   can display frontispiece images in XTerms and play AIFF-sounds, a story
   file navigator, interface margins, restore from command line, a much
   improved streams implementation, a manpage and many other small features
   as well as a large amount of bugfixes.
 - Implemented conversion of font 3 (charachter font) to unicode. This
   appears to make Beyond Zork's map appear at least readable.
 - All directories in the "ZCODE_ROOT_PATH" are now recursively searched for
   Z-machine games.
 - Implemented recording and replaying of timed input.
 - Implemented new "*.snd" search method: Generalized for all files, not only
   Lurking Horror and Sherlock, tries upper- and lowercase.
 - Fixed scan_table opcode. This fixes Beyond Zork window output.
 - The filename input for save and restore may now be cancelled using the
   escape key.
 - Pressing arrow up/down during filename input no longer displays the
   command history.
 - Implemented wordwrapper / ncursesw margins.
 - Flags are now correctly restored during undo and restore opcodes.
 - Added progress indicator for story-list update.
 - Fixed a bug that would damage the story list in case a game had a release
   code with a length equal 5.
 - Fixed an issue that would cause bits > 0xffff from routine address to be
   lost on timed-routine-calls.
 - Implemented "no-update" command line flag and config option to avoid long
   startup scan times (for example on slow notebook drivers with many story
   files).
 - Implemented "--search" and "--recursively-search" command line
   invocations.
 - Fixed bug in scrollback parapgraph position cache.
 - Fixed a memory leak from getcwd(NULL, 0) in "filelist.c".
 - Fixed scroll-down display for scrolling to bottom.
 - Fixed crash that occured when a read-instruction was recursively called
   from a timed input verification-routine.
 - Modified LOADB / LOADW opcodes to store 0 in target instead of doing
   nothing when trying to read from an illegal address. This appears to make
   the russian version of "All Roads" ("AllRoadsR.z5") work.
 - Fixed a bug in the story-title evaluation from filename when the story
   name did not contain any slashes.
 - Fixed display error on refresh of preloaded input from history.
 - Implemented IGNORE_TOO_LONG_PROPERTIES_ERROR config define which makes
   "property.c" ignore too long properties (fixes "HugeCave.z8").
 - Implemented forced predictable mode (ignores seeding random generator).
 - Fixed story-list for directly invoked files with relative pathname.
 - Many, many other minor fixes and extensions.

   Version 0.5.3 -- March 11, 2009
 - (find c cgi cpp fizmo ncursesw simple-c simple-cpp single-turn sound-sdl
   -type f -name '*.c' -or -name '*.cpp' -or -name '*.h' | xargs cat | wc -l
   resulted in 28499 lines of output)
 - Re-built SDL-Sound system (implemented sound effect stack, better
   sound-has-finished-detection and many, many fixes).
 - Re-wrote Makefile system. Releveant module defaults are now kept in
   separate .mk-files.
 - Added support for AIFF-sounds in blorb files.
 - Added support for extra-blorb files (these are specified on the command
   line directly after the story file name).
 - Added "-Wextra" flag to CFLAGS and cleaned up new warnings caused by the
   new flag.
 - Cleaned up config file, fixed a minor bug and made boolean vars work
   "more" correctly.
 - Fixed "VERIFY" opcode.
 - Several fixes: Patched "savegame.c" to re-enable use of "CMem" save
   method, removed a superfluous free in streams.c which tried to free a
   static string.
 - Many minor fixes (option system, running X11-enabled fizmo in text-only
   console, etc).

   Version 0.5.2 -- January 17, 2009
 - (find c cgi cpp fizmo ncursesw simple-c simple-cpp single-turn sound-sdl
   -type f -name '*.c' -or -name '*.cpp' -or -name '*.h' | xargs cat | wc -l
   resulted in 27123 lines of output)
 - Implemented filelist (which remembers all files invoked and files in
   searched directories).
 - Added use of libxml2 to parse metadata from the babel XML file.
 - Implemented story selection menu in ncursesw interface.
 - Implemented parsing of rc file.
 - Added bold-for-bright-foreground and blink-for-bright-background terminal
   options.
 - Implemented dont-use-color and force-color option.
 - Fixed interface for > 121 colors.
 - Added "help" command.
 - Implemented "savegame-path" configuration option which specifies the
   directory for savegames.
 - Implemented text paragraph position cache to speed up scrollback for large
   amounts of text (not elegant, but works).
 - Savegames are no longer restored in case serial, release or checksum don't
   match.
 - Removed non-standard "FILE" chunk again, the storyfiles for directly
   invoked savegames (from the command line) are now located via the
   filelist.
 - Implemened "force-quetzal-umem" config option from the command line.
 - Added manpage.
 - Fixed "verify" opcode.
 - Basic implementation of input stream 1.
 - Implemented basic blorb support (meaning that blorb files are detected,
   information about pictures and sound is parsed and the first found "ZCOD"
   chunk is executed).
 - Fizmo now always keeps a FILE* to the story file open, eliminating the
   need for a lot of open / close calls (and simplyfing blorb handling).
 - Stories may now be started from the command line using their "real name"
   in case they are stored in the story-list. Example: "fizmo sorcerer".
 - Many, many small fixes (scrollback, winch-redisplay, negative score,

   Version 0.5.1 -- November 4, 2008
 - (find fizmo simple-c simple-cpp c cgi single-turn cpp ncursesw qzinspect
   snd2aiff sound-sdl -type f -name '*.c' -or -name '*.cpp' -or -name '*.h' |
   xargs cat | wc -l resulted in 23265 lines of output)
 - Implemented SDL-sound-interface. To make SDL work in Mac OS X I've used
   MacPorts to install SDL ("port install libsdl"), on Debian I've been using
   "apt-get install libsdl-sound1.2-dev" (maybe "apt-get install alsa-base
   alsa-utils" is also required).
 - Fixed scrollback and i18n-exit-translation.
 - Fixed libfizmo to also use setitimer/sigaction (makes fizmo work better on
   linux).
 - Implemented foreground/background color command line parameters for
   ncursesw interface.
 - Fixed get-cursor-[column|row] for ncursesw (makes PRINT_TABLE and Sherlock
   work).
 - Added "UMem" support for quetzal.
 - Added "snd2aiff" commandline utility (this was the basis for the first
   sound interface experiments).
 - Added "qzinspect", a simple commandlinetool which uses libfizmo to list
   the contents of a quetzal savegame.
 - Added non-standard "FILE" chunk to savegames which contains the absolute
   file name of the story file which saved the game.
 - Implemented restore from the command line: In case a quetzal-savegame
   containing the non-standard-chunk "FILE" is given on the command line,
   fizmo will try to restore the savegame using the story filename stored in
   this chunk.

   Version 0.5.0 -- October 30, 2008
 - (find fizmo simple-c simple-cpp c cgi single-turn cpp ncursesw -type f
   -name '*.c' -or -name '*.cpp' -or -name '*.h' | xargs cat | wc -l resulted
   in 21963 lines of output)
 - This version is now definitely usable to play all non-v6 games. Did
   extensive testing using Borderzone, "LostPig.z8", "Zokoban.z5",
   "crashme.z5", "etude.z5", "paint.z5", "random.z5", "reverzi.z5" and
   "unicode.z5". Only two minor known bugs remain: Scrollback sometimes
   miscalculates the current row after a lot of scrolling back and forth
   (which is always "fixable" to pressing any-key which correctly rebuilds
   the current output page, and a display anomaly on the frontpage of
   "vampire.z8" which I intended to keep after a lot of code-inspection
   (since fizmo appears to be implementing the screen modell correctly and
   fixing this display problem breaks a lot of other games). This version has
   been tested on Linux, Darwin (Mac Os X) and a little bit on XP/Cygwin
   (using a self-built ncursesw).
 - Added "z_ucs_rchar" to "z_ucs.c".
 - Re-implemented word-wrapper to not compress multiple spaces, keep spaces
   after newlines and buffer more than on line. The fixes the map display
   problem in "Enchanter".
 - Changed opcode_restore to read dynamic memory and stack of the restored
   game into a freshly allocated memory block instead of directly into the
   game data. This makes it possible to now continue the current game instead
   of dropping back to the command line.
 - Fixed opcode_save to not exit in case an errors occurs during saving, but
   to merely give a warning (and correctly evaluate the branch). Now the
   currently active game isn't lost anymore in case a save goes wrong.
 - Added a LOT of error checking in "iff.c" and "savegame.c". There's
   possibly a better way, but checking every single return value also works.
 - Added table-saving extensions to save- and restore-opcodes.
 - Fixed tokenizing for version 5+.
 - Fixed timed-input detection for "read" opcode. This fixes the crash in
   ZTUU when the lantern goes out.
 - Ran fizmo through (sp)lint, fixed memory leaks, minor bugs, many
   typecasts, some double and inconsistent definitions, cleanup up code.
 - Fixed Makefile dependencies.
 - Fixed a possible SIGSEV when using fprintf with "%ls" output format. This
   tended to crash when used on wchar_t on darwin.
 - Implemened scrollback for ncursesw interface, added support method for
   scrollback in "history.c".
 - Added last missing v5 opcodes.
 - Fixed end-of-stack detection so that stack is now correctly enlarged when
   required.
 - Added module-based localization, removed unused localization entries.
 - Fixed space detection in wordwrapper.
 - Fixed metadata-handling (memcpy) in history.c
 - Added "single-turn" interface.
 - Fixed operand handling in zpu.
 - Added configuration system.
 - Re-built save/restore, should be finally 100% quetzal compatible.
 - Implemented output stream 4.
 - Fixed output stream 2.
 - Some split-window / set_window / set_cursor fixed for ncursesw-interface.
 - Substitued ualarm/signal with setitimer/sigaction since the first one
   won't catch SIGALRM on linux and manpage says that ualarm is obsolete.
 - Fixed color management so that ncurses color pair is avaiable for reading.
 - Many, many minor bugfixes.

   Version 0.4.1 -- November 14, 2007
 - (16373 lines in *.h and *.c files)
 - Fixed a bug in "parse_utf_8_char", this fixes i18n-messages.
 - Added C++ wrapper.
 - Implemented demo C++ screen interface.
 - Separated code in core, interface, c and cpp interfaces.
 - Improved upper window handling (trinity sundial) and blockbuffer
   (zork1.z5).

   Version 0.4.0 -- March 20, 2007
 - (13718 lines in *.h and *.c files)
 - Moved to this new version on March 3, 2007. The old version has been lying
   around untouched since November 15, 2006.
 - Abandoned the internal use of UTF-8. It is just much too complicated to
   handle in the interface. I'm not even sure that with all the code
   necessary to handle UTF-8 handling that there is much space wasted. The
   important point for me is that using UCS-4 -- fixed, 32-bit sized
   characters -- is much more easier, and thus safer to use.
 - Re-implemented everything using wchar_t. The barebones C-Interface is the
   first converted. Everything took only a few hours.
 - Compacted code a little bit (tracelog.h, etc.).
 - Re-implemented the history-buffer in "streams.c". It is controlled by the
   Z_HISTORY_INCREMENT_SIZE and Z_HISTORY_MAXIMUM_SIZE constants in file
   "config.h". The buffer is re-alloced until it reaches the given maximum
   size. At that time, wrap-around is used to keep the buffer up to date. A
   debug function named "log_history" exists.
 - Converted the error handling to wchar_t.
 - Implemented SIGWINCH-handler for interfaces and associated handling in
   "ncrws-if.c".
 - Implemented metadata (color and style) storage for the history.
 - Implemented set_font opcode.
 - Fixed two minor issues in the wordwrapper.
 - Fixed a missing string-terminator in the zchar_to_ucs_4-function. Over two
   years that thing was working without it ... unbelievable.
 - Fixed a token-length problem in parsing.
 - Implemented correct UTF8-filename-handling for savefiles.
 - Implemented CATCH and THROW opcodes, both untested.
 - Re-built interpreter commands with new wchar-base, prompt-repetition from
   history and user-configurable prefix.
 - Re-implemented scripting with UCS-4.
 - Implemented buffering of metadata -- colour, styles and font -- in the
   history buffer. Windows may now be resized and keep their styles intact.
 - Fixes in property-management for version 4 games.
 - The sound-effect opcode is accepted now for effects 1 and 2, although it
   doesn't do anything yet.
 - Improved split-screen in ncurses-interface: In case the upper window
   becomes smaller, its content is copied over into the lower window (making
   reading the sundial in trinity.z4 working).
 - Fixed set_window to set cursor to (0,0) when selection upper window (this
   makes the sonarscope in Seastalker work).
 - Fixed wordwrapper to accomodate for styles which are sent after normal
   text which is followed by a space -- so far the style was activated before
   the space was output.
 - Implemented command history.
 - Fixed a bug that would cause screen resizes in versions before 5 try to
   set colours.
 - Implemented specialized blockbuffer for upper window.
 - Threw away wchar_t- and locale.h-usage. The problem is that they are not
   suported on older compilers, embedded systems or in emulations like
   cygwin. According to specifications, wchar_t may even only have 8 bits
   width and is compiler-implementation dependant, so it's practically not
   useable to store unicode-data. So i've implemented a z_ucs type which is
   always used for internal processing of characters. Thus every interface
   gets its output in z_ucs chars (which are simple int32_t types) and can
   happily typecast it into wchar_t if desired. Interfaces may still use
   wchar_t (in fact, ncursesw does), but the core is now completely
   autonomous.
 - Fizmo now compiles fine without warning on Cygwin. Both the c- and the
   ncursesw-interfaces seem to work nicely.
 - Fixed a bug in the wordwrapper which caused the zchar-converter-state and
   the linebuffer to overlay in a single byte.
 - Added "z" parameter to i18n string, representing z_ucs-strings.
 - Fixed stream-3-output: Current length is now always updated, not only when
   closing the stream.
 - Fixed input to make it work all across the screen and not only on the last
   line.
 - Fixed cursor movements and screen splits for version 4 and 5.
 - Splitted files into fizmo-core and interfaces. The interpreter itself is
   now put into a static library and linked in from the interfaces.
 - Moved "extern" statements into header files.

   Version 0.3.1
 - (12276 lines in *.h and *.c files)
 - Added a few ZSCII/ASCII/ISO-8859-1/UTF-8 conversion functions in "text.c".
 - Improved the ncursesw-interface to handle US-ASCII and UTF-8 directly.
 - Implemented detection if a character has a suitable ZSCII representation
   before adding it to the input line.
 - Fixed a bug which prevented correct assembly of multi-Z-characters.
 - Fixed a bug that caused multi-Z-character constructions to have a wrong
   word length.
 - Extended ncurses interface to handle scrolling on the input line.
 - Once input of a new line is finished, it is erase and then output again
   using the interface's output_utf8 function. This allows output which is
   longer than a single line to be word-wrapped.
 - Implemented correct delete and insert in the ncurses interface.

   Version 0.3.0 -- November 10, 2006
 - (13302 lines in *.h and *.c files)
 - Abandoned the concept to pack absolutely everything in UTF8f. Having to
   think though the fork-8f is simply more complicated than necessary. In the
   name of "Keep it simple, stupid" I'll revert to my old idea of having a
   function in the interface for every output function like color setting,
   changing font style and so on.
 - Removed wordwrapper, pager, decoder, utf8conv, fork8f and fpipe. Reverted
   the system to the plain-style-C interface. I'll use the break in the
   development chain to clean up the code and take a second look at most
   things which has proven quite benefical in similar occasions.
 - Cleaned up most of the code. I've now got a clean, simple version without
   any real interface around running again. Better yet, since my last tries
   with ncursesw I've finally found out how to reliably produce UTF-8 output:
   By simply calling the setlocale function from #include <locale.h> and
   setting LC_ALL to "". Once the system locale is now set to something using
   UTF-8, ncurses delivers correct output.
 - Implemented a new, much simpler wordwrapper that should now also wrap
   UTF-8 correctly.
 - Fixed quetzal saving. The main FORM chunk has now the correct length so
   that both frotz and Zoom now correctly load savegame files.
 - Implemented a whole new wordwrapper. This one correctly wraps UTF-8 and is
   capable of storing "metadata" -- colors and styles -- into the text. This
   allows color and style changes in the middle of a word without having to
   flush buffers.
 - Implemented colors.
 - Implemented text style.
 - The etude.z5-test is running again. So far I've got everything working
   except the character output.
 - Implemented v3 window handling.
 - The random.z5 test is now running okay.
 - Implemented [More] prompt.

   Version 0.2.1
 - Improved command line parameter handling.
 - Fixed a REAL nasty bug in the line-history resulting in buffer overflows
   in very rare cases.
 - Fixed another minor bug that would let the word wrapper start a new line
   after input with a space (Wishbringer's "read message and move leaves") by
   added the wordwrap_reset_wrapper method (which correctly reset the number
   of consecutive spaces).
 - Fixed a bug that would cause a crash when games were saved in a restarted
   game (forgotten store_empty_stack_frame).
 - (Successfully completed Wishbringer -- 96/100 points, one wish used. I
   just have to find a way to unlock the chains down in the tower...)
 - Fixed paging module, long lines causing wrap-arounds are now correctly
   accounted for. Modified the module to keep one more line than required on
   the screen to ease continued reading.
 - Tested compatibility to Zork I, Z-Machine version 1, release 2, serial
   number AS000C. This version appears to have a bug at $585b. It occurs when
   the command "open mailbox and read leaflet" is executed right at the
   beginning. To circumvent this, a skip-underflow-check can be enabled in
   variable.c.
 - I've posted a related newsgroup-message at
   http://groups.google.de/group/rec.arts.int-fiction/browse_frm/thread/c77652b28be69f2d/a52b9f652fc75928#a52b9f652fc75928
 - Added the "@info" command.
 - Added automatic detection of "problem" games. This way, the "AS000C" hack
   is automatically activated at start-up.
 - Activated hacks are displayed using the "@info" command.
 - (0.20.1 finished)
 - Enchanhed the pipe/filter system. Each filter will now receive the
   destination function (and "object-struct") directly. Thus, no more extra
   forwarding functions are required.
 - Rebulid the windowing system in the curses interface.
 - No more flushes are sent from the fizmo "core" any longer. The interface
   will flush it's filters by itself if required (sending a flush into the
   first filter in case input is required or the interface is closed).
 - ABSOLUTELY FASCINATING to discover how many can bugs can still reside in a
   program just to creep up occassionally ... or is that just a sign of a bad
   programming style? Now I begin to grasp even more the significance of
   Java's Array-out-of-bounds-exception. I found a bug in the utf8x-buffer
   (forgot a multiplation by factor 3, resulting in a much too small buffer.
   I must have had a lot of overflows without ever noticing them in the
   past). Found another bug in the UTF8x-Converter where I simply referenced
   the wrong variable.
 - Fixed a forgotton "converter->utf8f_parameter_bytes_to_copy = 0" in
   utf8conv.c which SOMETIMES (grrr!) caused an error which caused the screen
   output to vanish.
 - Reorganized piping in the curses interface. Every window now has its own
   combination of wordwrapper, converter, pager and decoder. General window
   commands like split_window or erase_window are caught by a enhanced type
   of decoder named fork8f and passed along to the correct window structure.
   The random.z5 seems to work fine and I hope it's sufficiently correct to
   finally try my luck with Seastalker.
 - (0.20.2 finished)
 - Fixed status line display.
 - Fixed ncurses color recycling.

   Version 0.2.0 -- April 15, 2006
 - (12794 lines in *.h and *.c files)
 - Version 0.2.0 adds an unix interface, allowing for timed intput, and an
   [n]curses interface including color, better wordwrapping and accented
   characters. Zinc now runs random.z5 and passes all of the etude tests. I
   completed Moonmist without encountering any strange behaviour.
 - Put the conversion of UTF-8 to [ASCII|ISO-8859-1|UTF-8] in utf8conv.[c|h].
   That way, c_if.c is now down to a minimum size, and all it's "outsourced"
   functions -- wordwrapping and UTF-8-conversion -- can now be used without
   any problems by other functions or interfaces.
 - Cleaned up Makefile.
 - Implemented call_vs2 and call_vn2 opcodes.
 - Made PRINT_NUM output signed instead of unsigned numbers (found it thanks
   to etude.z5).
 - Corrected OPCODE_MOD to correctly handle signed operand 0 values (etude
   again).
 - Corrected a REAL nasty mistake: Replaced sizeof(<constant>) in a
   utf8conv.c malloc-call with a simple <constant>. This made the system
   crash under OS X PPC (though not on linux and some other unix-variant).
 - Re-organised the makefile a bit. Interface dependencies are now correctly
   resolved and build dependencies are in order again.
 - Renamed the interpreter from the project name "zint" -- meaning
   Z-Machine-Interpreter -- to "ZInC", meaning Z-INterpreter-Code.
 - Corrected the Makefile again.
 - Implemented the Unix-Interface. This one assumes that it's running on a
   unix machine terminal without any specials (not even curses). It uses
   select and tc[g|s]etattr to implement timed and preloaded input and a
   get_char implementation.
 - Fixed a bug in unix_if.c that would cause a segfault on startup.
 - Some more i18n, cleaner tc[g|s]etattr in unix_if.c
 - Implmented correct input line restoration after timed-input output.
 - Modified text.c so that the streams_echo_input command is executed no
   matter whether the first word could be found in the vocabluary or not.
 - Implemented preloaded input in the Unix-Interface.
 - Implemented correct READ_CHAR in Unix-Interface.
 - Fixed a LOT of tiny bugs and itches.
 - Implemented [MORE] paging via additional pager module.
 - Fixed german translation of i18n messages.
 - Fixed ZSCII-to-UTF8 encoding, ZInC now passes etude's accented character
   test.
 - Implemented a curses interface. At the moment raw constructs for the upper
   and lower window and a status line. Basic color management. Adapted
   wordwrap.c a little bit in order to achieve corrent linebreaks.
 - Completely re-wrote wordwrapping in order to get rid of trailing spaces
   and other problems evident when using curses.
 - Completely re-wrote the entire output stream system. It turned out that
   the usage of flags caused problems buffering text: In order for everything
   to work correctly the flags would have to be buffered along with the text
   output. Text-relevant formatting data like color is now passed directly
   along with the UTF-8 text: Internally I'm now using an encoding that can
   encode special formatting sequences into the UTF-8 stream -- see UTF8X.txt
   for more information. These conversions added the utf8x.* and decoder.*
   files. Although quite a major change, the encoding helps to make the whole
   system a lot cleaner.
 - Numerous fixes to the [n]curses interface, addition of status line, better
   color management with careful consideration of availiable color pairs.
 - Using the ncurses interface, the interpreter now passes the etude.z5 test
   with the exception of the text styles and undo capability.
 - Modified the i18n_translate_and_exit and close_streams functions to
   support a message-on-exit. This way, error messages are supported without
   regard for what's left in the UTF8x output pipe and error output can be
   seperated from the other valid stream output. This way, the ncurses
   interface can correctly endwin() and output the message to read on stderr.
 - So far, multiple invocations of READ or READ_CHAR with timed input casued
   a "nested timed input not availiable" error. This is a problem for the
   random.z5 test which appears to use this feature. The nested behaviour has
   been altered to an overwrite behaviour. In case a second timed input is
   requested, the old timer and routine are erased from memory and replaced
   with the new data.
 - Fixed interface commandline choice.
 - The random.z5 tests now apperas to run correctly.
 - Fixed a tiny bug in wordwrapping directly after read_line, fixed command
   line parsing, i18n-string-length and a few tiny localization issues.
 - Added text styles to the curses interface.
 - Finally added modifiable names for game saving and restoring.
 - (Successfully completed the red storyline of Moonmist).
 - Renamed ZinC (name already exists) to fizmo: Fizmo Interprets Z-Machine
   Opcodes.

   Version 0.1.4 -- December 9, 2005
 - (8848 lines in *.h and *.c files)
 - The 0.1.4 complies to the strictz.z5 test, allows transcripting (even on
   startup via command line switch). A few minor bugs were fixed and a
   history of the last output is kept, allowing for a faithfully original
   prompt after an interpreter command has been finished.
 - Compacted locate_dictionary_entry (so that the zscii_string_length
   function is no longer needed) and adapted it to version 4+ files.
 - Implemented the object-number-unequal-zero-checks (in order to run
   strict.z5).
 - Adapted read opcode to version 4+.
 - Renamed c_iface.c to c_if.c in order to gain more space for other
   interface names.
 - Fixed zchar_to_utf_8 so that multibyte-characters are handeled correctly
   between two zchar_to_utf_8 function calls (when continuing on the first
   call's source string due to output buffer shortage).
 - Implemented basic transcipting in streams.c and moved the trace functions
   there. All output is now channeled from text.c through stream.c into the
   active interface. The input is seperately written to to the streams, in
   order to be able to distinguish it from regular output (and to write it
   only to the streams requested).
 - Implemented "-s" / "--start-script" startup option to start scripting
   right away. This allows to capture really all input emitted by the game.
 - Implemented input of file name (supplying a default filename) for
   transcripts.
 - Fixed a bug in the parsed word position which would cause the following
   garbeled Moonmist-output:
 - Implemented CALL_VN opcode.
 - Added STRICT_Z definition in config.h and implemented a lot of checks in
   object.c together with a warning mechanism in i18n.c in order to make this
   interpreter compliant to strictz.z5.
 - Fixed a bug in the length-code-size determination in properties.c
   (replaced "& 80" with "& 0x80").
 - Added a lot of STRICT_Z tests to properties.c.
 - Implemented READ_CHAR opcode (not very well, since in stanard C without
   any Operating-System-specific calls there's no single read of a char, thus
   you still have to press enter).
 - Zinc now passes the strictz.z5 test and looks close enough to the frotz
   output stored at
   http://www.ifarchive.org/if-archive/infocom/interpreters/old/frotz/frotz_zstrict_result (with other warning messages, of course).
 - Implemented wordwrapping as a seperate re-usable module in wordwrap.[c|h].
   The C-interface and the function for output to stream 2 currently use it
   both.
 - Implemented line_history_buffer, a circular buffer that will record the
   last output sent to the streams. It's supposed to be used for
   reconstruction of the current prompt in case an interpreter command is
   entered an the original prompt should be restored after executing it and
   later for easier handling of preloaded input.
 - Interpreter commands will now prompt with the last line that was output by
   the Z-program after finishing command processing.

   Version 0.1.3 -- November 27, 2005
 - (6013 lines in *.h and *.c files)
 - This 0.1.3 version adds localization for error- and startup messages,
   corrects a few minor bugs abd adds UTF-8 support.
 - Made mod (remainder-after-divison) signed (due to 2.2.1).
 - Corrected opcode_div so that the divisor, not the dividend, is verified
   not to be 0. Added divisor-not-0-check to mod.
 - A few paranoid sanity checks in opcode_read.
 - Modified opcode_read so that the whole line of input is always read, no
   matter how much can actually be stored so that the next line of input does
   not begin with left-over-text. The non-used input is discarded.
 - Removed use of input_to_zscii-function in text.c, since the input does not
   have to be converted.
 - Extended store_ZSCII_as_zchar in text.c to accept not only characters in
   the current alphabet, but also to encode other chars as multi-z-chars,
   thus also allowing the '@' as input which I want to use to identify
   interpreter commands.
 - Implemented the "@predictable" command to switch interpreter in or out of
   predicatable random mode as suggested in the spec.
 - Made random generator more spec conforming by using negative values to
   seed the generator to this value.
 - Implemented parsing of command line options. Currently only used to start
   up interpreter in predictable random mode.
 - Implemented UTF-8 handling. The data traffic between the core interpreter
   and the interface(s) has been modified to use exclusively UTF-8. It is now
   also possible to output a whole string via the utf_8_output function.
 - The C interface can now be put in three output modes -- ASCII, ISO-8859-1
   and UTF-8. Characters that cannot be printed in the ASCII and ISO-8859-1
   modes are substituted by a '?'.
 - Implemented UTF-8 output as defined by the Z-Machine specification v1. So
   far only implemented without testing.
 - Implemented loclization. In order to avoid special cases in which it is
   not possible to tell the user that the localized files cannot be loaded
   since the files have not been loaded yet in his own language :-) I'm using
   the prepi18n binary to convert the locales/xx_XX.txt into the file
   locales.c which can be directly complied into the interpreter binary.
 - The localization files are supposed to be encoded in UTF-8 so they can be
   easily output using the usual interface functions.
 - Split the activate_interface function into activate_interface and
   link_active_interface_to_story. The first call actually initializes the
   interface which is used to make output possible (in case the story file
   can't be loaded), the second call performs the necessary initializations
   with the story file's header.
 - Extended localization to use parameters the like "Could not open \{0}.".
 - So far, parameters are only allowed to contain ASCII values.
 - Moved last remaining function in output.c, read_zscii_string, into text.c.
 - Implemented forgotten lowering of case after reading input from the
   keyboard. Now it's possible to answer "YES" to Moonmist when it asks for
   "YES or NO".
 - Cleaned up stack.c a bit and fixed a bug that would have caused the stack
   not to enlarge in case it was supposed to.
 - Extended localization to use type identifiers. In the beginning I decided
   to skip them, but to make error messages useful to the user and handier in
   the code I decided to give it a shot. Parameters are now specified by
   using \{0s} for a string and \{0d} for a decimal. Together with a few
   supporting wrapper functions, the main file already looks much cleaner.
   Due to the buffering of the Z-Machine output, messages are even correctly
   word-wrapped.
 - Implemented switching between ASCII / ISO-8859-1 / UTF-8 into zinc.c.
 - Logically it would have been better to put it in to c_iface, but since it
   will be required more often and don't want any copied code I decided to
   leave it this way.
 - Implemented echo option in the C interface in order to be able to read the
   input from input piped into the interpreter.
 - Converted all current 51 conditions-to-translate from FATAL_ERROR and
   [s|f|]printf to i18n_translate[and_exit]. The FATAL_ERROR macro has been
   removed.
 - Compacted the zchar-storage-functions.
 - Completely replaced read_zscii_string with zscii_to_utf_8. The new
   functions will output z-char-strings of an arbitrary length into an
   limited-size output buffer. Multiple calls to this function for the same
   source string will continue with the output where the last call of the
   functions had to stop.

   Version 0.1.2 -- October 20, 2005
 - (5094 lines)
 - 0.1.2 fixes my currently last known problems with playing the 840726 Zork
   I revision. Word wrapping makes it look a little bit nicer and the
   barebones-C-interface is now probably as good as it can get. Did quite a
   lot of code-cleanup.
 - Implemented NOT opcode.
 - Implemented NOP opcode.
 - Implemented RESTART opcode.
 - Implemented POP opcode.
 - Implemented SHOW_STATUS opcode.
 - Allowed output of tab -- ZSCII 9 -- for version 3 (due to the guidebook in
   the Dam Lobby).
 - Implemented VERIFY opcode.
 - Implemented PIRACY opcode (we're all honest, so an evaluate_branch(1)
   sounds okay, right?).
 - Fixed a bug in INC_CHK (wrong cast to unsigned value instead of signed).
 - Totally forgot about the 8.3-filename-limits on DOS machines, files were
   renamed and merged together -- /(.*)_opcodes.c/ joined /$1.c/.
 - Fixed a bug in the random opcode which allowed 0 as a minimum result value
   to the random call (should have been 1). Fighting with the thief now
   results in much less garbled text output.
 - Cleanly wrapped TRACE_LOG calls in curly braces, meaning disabling tracing
   now works correctly. The zinc binary now has a size of 82308 bytes with
   logging enabled, and 54700 bytes without logging.
 - Created Makfile-dependency for zinc.h from iface.h (by using the touch
   command, is the okay?). Made all and clean .PHONY targets.
 - Removed globals.c, moved globals into zinc.c and created "extern"
   references in other source files.
 - Moved globals to corresponding source files (which eliminates a lot of
   non-needed "extern" references).
 - The linux manpages tell me bzero is outdated. Faithfully replaced bzero
   with memset calls.
 - Replaced memcpy call with a loop that assembles uint16_t values byte by
   byte. This will avoid problems on little-endian machines (i386 and the
   like), since the Z-machine uses a big-endian model.
 - Used the Mersenne Twister as random generator. Only the genrand_int32
   function is used, the rest of the functions, with exception of the two
   init calls, were deleted from the mt19937ar.c file. The generator is
   seeded by an init vector consisting of the number of seconds since 1970, a
   standard C random generator number, the number of milliseconds since 1970,
   followed by another standard C random generator number.
 - Splitted zinc.h in a header file for each .c file. Adjusted Makefile and
   #includes accordingly.
 - Changed **z_opcode_procedures into *z_opcode_functions and moved it from
   zinc.c to zpu.c (thus avoiding external reference and setup). Now
   z_opcode_functions is a one-dimenstional array indexed by the value
   instruction_form + instr_code. This allows saving the space for 32
   pointers in the smaller opcode classes (with only 16 instead of 32
   opcodes).
 - Implemented buffering / word-wrapping in the C Interface. With this
   change, the C interface should be complete. Comparing to everything else
   it's still very raw, but hey, it works.
 - Implemented BUFFER_MODE opcode.
 - Moved all the configuration options from zinc.h to config.h.

   Version 0.1.1 -- September 23, 2005
 - 0.1.1 was the first version that was able to save and restore games.
 - Implemented OR opcode.
 - Implemented MOD opcode.
 - Changed get_prop_len so that get_prop_len(0) returns 0 (for 1.1 standard).
 - Updated property.c, splitted up property search in three functions in
   order to allow easier implementation of the GET_NEXT_PROP opcode.
 - Implemented GET_NEXT_PROP (you can now pick up the elven sword).
 - Implemented CALL_2S.
 - Implemented CALL_2N.
 - Implemented SET_COLOUR (but does not have no effect in c_interface).
 - Implemented all remaining 2OP-opcodes with the exception of THROW.
 - Implemented DEC opcode.
 - Implemented PRINT_ADDR opcode.
 - Implemented CALL_1S opcode.
 - Implemented REMOVE_OBJ opcode.
 - Implemented LOAD opcode.
 - Modified the tokenising routine to correctly return position and length of
   a word even if it was not found in the dictionary.
 - Implemented dummy stack frame storage for quetzal compatibility.
 - Implemented SAVE opcode.
 - Implemented RESTORE opcode.

   Version 0.1.0 -- September 14, 2005
 - 0.1.0 is the first version that allows basic playing of version 3 games.
   The only game used for testing so far is Zork 1 which was drawn from the
   well-known site of Peter Scheyen.
 - Moving around the house, object movement (taking and dropping of the
   leaflet) all seems to work quite okay now.
 - Implementing more missing opcodes.
 - Fixing a few not-so-easy to find bugs (like the property addresses etc).
 - Fixed a bug in the branch-address calculation.
 - Fixed a bug in the object-unlinking mechanism that would not correctly
   remove the object-to-be-unlinked from an object further up the sibling
   line.

   Version 0.0.4
 - Implemented the c_interface, which allows very bare-bone input / output
   provided by standard C facilities (meaning fprintf / fgets).
 - Implementing of user input, tokenising and dictionary parsing.

   Version 0.0.3
 - Major cleanup of the code.
 - distribution of the old interpreter.c file into multiple .c files.
 - First appearance of the interpreter.h interface.

   Version 0.0.2
 - Further implementation of the basic capabilities, including property
   management etc.

   Version 0.0.1
 - First basic implementation of memory, variables, stack and primary
   opcodes.


