Enqueuing for processing upon rebase
SPRelationshipResolver: Ensure objects are faulted
SPPersistentMutableSet: Implements new helper
Processor Test: Recreates stalled scenario
SPChangeProcessor: Nukes TODO
SPChangeProcessor: Code Cleanup
SPChangeProcessorTests: Adds TODO
Merge pull request #358 from Simperium/issue/354-inconsistency-failsafes

Inconsistent State Failsafes