The entire unknown command is echoed back to the user on error.
Added cCuboid:Assign(OtherCuboid) API function.
APIDump: Fixed missing return statement.
Merge pull request #800 from mc-server/EntireCommandError

The entire unknown command is echoed back to the user on error.
APIDump: Documented a forgotten cCuboid constructor.
Debuggers: Added a test for WE selection API.

This tests mc-server/WorldEdit#34.