This should contain all the major changes.
For minor stuff, refer to the commit log of the repository.
+2011-02-15:
+- Fixed a problem of not saving and loading the "lighting expired" value of MapBlocks properly. This caused high server CPU usage.
+- Ctrl-C handling on POSIX systems
+- Added simple command support to server
+- Added settings enable_texture_atlas and texture_path
+
2011-02-14:
- Created changelog.txt
- Added sneaking/crouching