Implemented copy() for variables.
Modified remove to use delitem. LIKEABOSS.
Fixed some ordering of interface methods.
Added __len__ to variables.
Added values() to variables.
Removed TODO. Verified.
Added popitem() to variables.
Moved iterkeys.
Added update() to variables.
Added setdefault() to variables.
Added has_key() to variables.
Added items() to variables.
Added get() to variables.
Added basic support for commands to Vimpy.
Added a metaclass that auto-instantiates types. Yucky.
Made commands a bit easier to create! With magic!
Added script-local variables. Just in case.
Finished basic arguments support.