unregister_many can use the results of register_many to unregister combos
Merge pull request #32 from pelly/master

unregister_many can use the results of register_many to unregister combos
Being a little more explicit about returns.
AMD support.
Style tweak
Update to 2.0.2
Merge pull request #38 from dmauro/development

2.0.2 updates