* replaced blocking/blocked by predicates
* added test for knight of dusk (currently fails)
* added source parameter to filters and everything else that needs it
* some changes to various predicates
* test fix
* small changes to filter code
* merge fix
* fixed a test failure
* small change to Karn, Scion of Urza
* removed sourceId from filter methods and other similar places
* added new getobject method to fix some test failures
* a few more fixes
* fixed merge conflicts
* merge fix
* added incomplete party count implementation
* updated party count implementation
* added party count test
* fixed tests, updated test framework
* added an additional test
* fixed some errors in party count computation, should be good now
* fixed a small error with test generation
* fixed an NPE issue
