entry points from python into pyd

class members generally go through method_wrap or function_wrap, both of which call pyApplyToAlias.

standalone functions are registered by def, which goes through function_wrap – pyApplyToAlias.

delegates and function pointers go through PydWrappedFunc_Ready, which goes through pyApplyToDelegate

accessing D objects goes through get_d_reference (hey, this includes delegates and functions!)