Added support for IC2 wrenches and TE hammers as tools for rotating blocks.
Added a new IMC callback for this, registerWrenchTool. Takes a string parameter being the FQN name of a static method with the signature `public static boolean(EntityPlayer player, Int x, Int y, Int z, boolean changeDurability)`. Returns true if item stack held by player is supported.
Split up BC integration into parts for each API package. Just in case someone decides to ship parts of the BC API.
Cleaned up a little.
Added support for railcraft crowbars.