h2048-0.2.0.1: CHANGELOG.md

# 0.2.0.1

* build with vty 5 and vty-ui 1.8 (thanks to @vikraman)

# 0.2.0.0

* conditional flags: `exe` and `vty`
* can now proceed after winning the game
* version number changed from `0.1.0.3` to `0.2.0.0` due to version policy
* change `System.Game` to `Game`