for basic vt220 emulation.

* Updated export test accordingly.

to the flip/flop/rotation filters.

* Updated text test.

* Renamed cucul_*_canvas_frame() to cucul_*_frame() because we bloody well
    know that a frame belongs to a canvas.

to be ignored.

the nearest ANSI values for the current attribute. When importing an ANSI
    file, force them to lightgray on black.

of toilet needs it.

* More debugging information in the import/export and font functions.

* Minor changes to the font2tga test program.

* Add Katakanas and Hiraganas to the default fonts.

the Doxygen documentation.

* Updated TODO.

functions. They're obsoleted by cucul_utf8_to_utf32() and rendered useless
    by fullwidth character support.

function.

the now official cucul_attr_to_ansi_[fb]g().

properly export cucul_utf8_to_utf32(). Evil API breakage, but no one
    uses these functions anyway.

unsigned char const * so that C++ programs won't complain.
                   ___  __  __  ____    ___   ___   ___
                  / _ \|  \/  |/ ___|  / _ \ / _ \ / _ \
                 | | | | |\/| | |  _  | (_) | (_) | (_) |
                 | |_| | |  | | |_| |  \__, |\__, |\__, |
                  \___/|_|  |_|\____|    /_/   /_/   /_/

cucul_export_file() but I'm not sure yet this is a good idea.
  * Use the new import/export API in libcaca.

cucul_import_file().