Changes in version 0.18:

The layout analyser is now able to separate blocks of text of arbitrary
shape as long as they are clearly delimited by white space.

The new option "--quiet" has been added.

The "--layout" option no more accepts an argument.

The "--crop" option now accepts negative coordinates, interpreted as
relative to the right-bottom corner of the image.

This version recognizes the letter 'a' with ring above.

Recognition of files with a single big character has been fixed.

A bug that didn't write maxval when saving pgm or ppm files has been fixed.

A problem that prevented compilation with GCC 4.3.0 has been fixed.

"make install-info" should now work on Debian and OS X.

The man page is now installed by default.

Arg_parser has been updated to 1.2.
