1Since version 0.13:
2- Improved game control settings
3- Added key repetition
4- Made the "main puyo" more visible by blinking
5- Added score board and hall of fame
6- Added a new music and game theme
7- Added some sound effects
8- Added OpenGL support
9- Added a useless effect (corona) in the about menu
10- Improved in-game animations
11- Improved menu appearance
12- Added a useless effect (corona) in the about menu
13- Fixed eye blinking problem on rotating puyo
14- Fixed a bug when rotating left in a single column
15- Fixed Windows sound and fullscreen mode
16- Improved the end of game detection
17- Inverted the puyo orientation when they fall
18- Version in about
19- Improved the Makefile
20- Added a changelog
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