Log Message:
(textproc/aha) Updated from 0.4.10.6 to 0.5

Version 0.5 (recent):
- Added support for ansi vt220 character set using utf8 characters, useful for tables
- Added support for italic text (thanks to suve)
- Added support for crossed out text (thanks to suve)
- Added support for 8 bit colours (thanks to  John Poole and suve)
- Added support for 24 bit colours
- Added rudimentary support for highlighting
- Fixed behaviour of ESC[7m "negative image"
- Fixed charset information in head based on used encoding (thanks to suve)
- Fixed ESC[27m "revert off" (thanks to suve)
- Escaping html special characters in title (thanks to suve)
- Not returning zero at unknown option error (thanks to suve)
- Refactored used colour scheme from int to enum (thanks to suve)
- Refactored error report using errstr (thanks to suve)
- Refactored code to avoid warnings (thanks to suve)
- Refactored options to an own struct (thanks to suve)
- Refactored color printing switch to an array (thanks to suve)
- Refactored application state to an own struct (thanks to suve)