Lots of edits in this one. Read the description.

- Revamped Blocks & Items to be based on Materials
- Created an ItemStack Class
- Made inventories use an ItemStack array instead of a hashmap
- Updated the World/Chunk System
- Moved Locations to their own package
- Added ChunkBlocks(16x16x16 section of blocks in a chunk)
- - there are 16 in one chunk
-- See the Minecraft protocol for this
- Added rainfall, temperature, topblock, and fillerblock variables to
biomes
- Modified ChatColor to use the unicode value of the chat character
- Moved Player.java to its own package(I want to seperate the networking
part into another class soon)
- Updated current blocks to the new block/item system(some
resistance/hardness values are not correct)