Correctly handle intersection as LHS of a temporal operator
Don't treat set operators the same as logical operators
Update timing operator tests to reflect set operator changes
Wrap variables with a union instead of a cross product
Merge pull request #12 from projecttacoma/fix_temporal_set_op

Correctly handle setOp as left hand side of a temporal reference
Filter bad oids from QDM elements before parsing the document
Just find and replace any bad oids in QDM elements before parsing