Get rid of voodoo Card.__new__() system
Get rid of voodoo Card.__new__() system

We're back to a BaseCard base class. A long, long time ago we changed
that to __new__ logic but the several rewrites since have made that
unnecessary. We now have a Card factory function again.

This allows us to prepare the terrain a bit for better virtual cards.

liujimj/fireplace,Ragowit/fireplace,amw2104/fireplace,Ragowit/fireplace,amw2104/fireplace,Meerkov/fireplace,NightKev/fireplace,jleclanche/fireplace,butozerca/fireplace,liujimj/fireplace,smallnamespace/fireplace,oftc-ftw/fireplace,Meerkov/fireplace,butozerca/fireplace,beheh/fireplace,smallnamespace/fireplace,oftc-ftw/fireplace