adding support for 1.2 style keyspace creation
adding workaround for detecting existing tables, since 1.2 won't return the column family names with the describe keyspace method
fixing index creation to deal with broken schema discovery in cassandra 1.2
adding support for the allow filtering flag in cassandra 1.2
updating delete table to work with Cassandra 1.2
fixing datetime query bug
fixing date time precision, and using utc time when turning the cal timestamp into a datetime
updating changelog
adding support for cal helper functions
testing min and max timeuuid functions with related debugging
updating changelog
Merge remote-tracking branch 'upstream/master'

Conflicts:
	cqlengine/management.py
	cqlengine/query.py