Added .gitignore
Removed some debug messages
Use of VOctree free function callbacks
Refactoring: added is_region_available()
Fix: removed non-existent files in Makefile.am and game.c's include
Terrain renderer data get initialized
LOD0 chunks underneath starting position are now preemptively downloaded
SHA1 checksum verification for chunks downloading
Terrain can now be modified
Removed infinite loop on NetClient_PollTCP()
Up to 5 (completely arbitrary number) packets can now be queued for download
Manual timeout checking, with a nice message displayed
Server IP can now be specified in the command line
Removed some debug message