- 2024-Sep-03
    * Libspiro Version 20240902 (1.5.0)
    * Downgraded configure.ac AC_PREREQ(2.70) to 2.69 for ELN distros.

- 2024-Sep-02
    * Libspiro Version 20240902 (1.4.0)
    * Bugfix - seen in fontforge issue 5209. Reverted code to remove
      (incorrectly coded) pointer tests which seemed like a good idea
      back then, but are of low value. Removed it to prioritize speed.
    * Removed config.sub and config.guess since these are generated at
      'autoreconf -i;automake' time, which may contain newer versions.
    * configure.ac updated from 2.64 to 2.70 due to obsolete warnings.
    * Libspiro code seems relatively mature and stable at this point.  

- 2022-Nov-01
    * Libspiro Version 20221101 (1.3.0)
    * Bugfix - removed forgotten if-then code used with scaling tests.
      Majority of users won't notice a difference since most FontForge
      fonts are created in the +x,+y quadrant. Users that might see a
      change/difference are users drawing only in the -x, -y quadrant.
    * Enhanced libspiro to allow closed-loop spiros starting with '['
      or 'a' by seeking the first available 'v', 'c', or 'o' as start,
      which may be found later in the spiro curve. This was the least
      modification needed to allow call-test10 or call-test11 to pass.

- 2022-Jul-22
    * Libspiro Version 20220722 (1.2.0)
    * Due to confusion created when ppedit was also re-licensed as MIT
      APACHE and GPL2+, it's necessary to re-clarify libspiro is GPL3+.
      In summary, GPL can include MIT code, MIT code cannot accept GPL.
      Please note code not in ppedit like libspiro's java is GNU GPL2+.
      Please note that libspiro's improvements or patches are also GPL.
    * Thanks to orbea for bugfixes concerning linking and linker flags,
      and removing .libs from linker path (some linkers don't like it).
    * Added more commenting in spiroentrypoints.h to clarify functions.
    * Reconfigured code to avoid exporting bezctx_intf.h since this is
      supposed to be internal to libspiro and not for external calling.
    * Also added https://gcc.gnu.org/wiki/Visibility to reduce exports.
    * SPIRO_INTERNAL_BEZCTX and call-test21.c added for simpler method
      of accessing libspiro for programs that only need the end result.
    * Test added for 'a','h' to ensure points don't overlap, else exit.

- 2020-May-05
    * Libspiro Version 20200505 (1.1.0)
    * Bugfix for CVE-2019-19847 affecting {call-test14 to call-test19}.
    * Fix a memory access bug/error created earlier by patch 2017oct28
      Users using tagpoint libspiro20150702 are unaffected by this bug.
      Users using tagpoint libspiro20190731 are recommended to upgrade.
      Thanks to Frederic Cambus for calling attention to these faults.
    * Add optional 'end knot' for open curves (useful for displaying).
    * CRA Version also higher than so-bump 1.0.5 used on some distros;
      this maybe of interest to distros that bumped an earlier version.
    * Some garbage-in/garbage-out checks to verify we have 'ah' pairs,
      and we don't start with ']', or end with '['. Add libspiro.3 man.
    * Corrected set_di_to_x1y1() to use a constant bandwidth of 0.0005
    * Code improvements and bug fixes for better tagged/spiro results.
    * Several improvements added to further increase libspiro's speed.

- 2019-Jul-31
    * Libspiro Version 20190731 (1.0.0)
    * Corrected library to report correctly as next version up. This is
      probably a significant change, therefore bumped library to start
      at 1.0 even though backwards compatibility remains close to same.
    * Scaling bug fixed. Libspiro can accept points that can be shifted
      and/or scaled, this gives libspiro more flexiblity with graphics
      and templates. Large or small spiros created before this fix may
      need adjusting to fit the new calculations, but they're resizable
      and movable afterwards.
    * Added toggle switch ncq giving users additional functionality not
      easily accessible through spiro paths, including quad0 access.
    * Removed the excessively long package name, which you'll note as a
      so-bump change with Fedora and also Debian in naming this package.
    * Some Java alignment fixed - Thanks to Mingye Wang
    * Added new anchor and handle {'a','h'} which may be useful to many.
    * Fix System.arraycopy and README.md - Thanks to Wieslaw Soltes.
    * Include config header before DO_TIME_DAY - Thanks to Jeremy Tan.

- 2015-Jul-19
    * Add patch for failure in hurd-i386 build (debian 1%0.5.20150702-2)

- 2015-Jul-02
    * Libspiro Version 0.5.20150702
    * Important bug fix issue #11 (missing file not included in 0v4).
    * 2 Minor bug fixes caught on Coverity scan, 'free()' and 'if (c=3)'

- 2015-Jul-01
    * Libspiro Version 0.4.20150701
    * Re-edit lib and tests to be more accommodating of older compilers.
    * Many changes to call-test.c to run on bigger variety of platforms,
      and some minor configure.ac tweaks done to resolve issues #9, #10.
      as seen on https://github.com/fontforge/libspiro/issues and:
	https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=789012
    * Added developer/install test for cyclic spiros (without {} or z).
    * Verify libspiro output data is correct for test curves {0,1,2,4}.
    * User can overide default configure flags with LS_CFLAGS and LS_LIB

- 2015-Jan-31
    * Libspiro Version 0.3.20150131
    * Allow Libspiro to be included using PKG_CHECK_MODULES().
    * Bug fixes in configure.ac m4 calls that caused problems seen in:
	https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196780
	https://bugs.archlinux.org/task/43373
    * Add TaggedSpiroCPsToBezier1() and SpiroCPsToBezier1() for programs
      that cannot use TaggedSpiroCPsToBezier0() or SpiroCPsToBezier0().

- 2013-Sep-30
    * Libspiro Version 0.2.20130930
    * Optional 'make check' runs 'call-test' to check libspiro functions.
    * Minor logic optimizations. Removed global 'n', passed 'n' instead.

- 2013-Jul-22
    * Use 'make check' to run spiro.c UNIT_TEST internal main() routine.

- 2013-Jun-28
    * Allow for setting VERBOSE during configure - helps with debugging.
    * Allow for setting CHECK_INPUT_FINITENESS during configure - to test
      input values for finiteness before doing calculations (optional).
    * Pass nmat variable to reduce repeatedly recomputing with count_vec().

- 2013-May-31
    * Convert build system to autotools method (configure.ac, Makefile.am).
    * Backporting robustness patches from Inkscape.
    * Increase Spiro max iterations to 30 after finding convergences of 15.
    * If did not converge or encountered non-finite values, do not output
      spline. Only good splines will be output.

- 2013-Apr-20
    * Initial commit to https://github.com/fontforge/libspiro.git
    * Add bezctx.md based on http://libspiro.sourceforge.net/bezctx.html

- 2009-May-08
    * Add Java implementation.

- 2007-Oct-28
    * Initial release.
