Prevent a possible NPE.
Fixed NPE (I blame @MattBDev :P).
Replaced vectors from LWJGL with vectors from the core.
Moved ItemStack renderer into a helper class.
Added minimum required forge version.
Update ru_RU.lang
Merge pull request #31 from Adaptivity/patch-1

Update ru_RU.lang
Fixed a possible NPE.
Make sure to unset the checked flag for chests.
Replace loops with the iterator version.
Removed ChunkCache. Not even sure why it was in the code...
Make sure the schematic can be saved even if some blocks "refuse" to save.
Save block mapping to schematic files for cross save compatibility.
Extract all constants.
Minor optimizations when saving/loading schematic files.
Bumped version number.
Only add mapping if it doesn't already exist.
Move MATERIALS constant to SchematicFormat
Use tabs
More formatting, missed a tab.