Amalgamate 0.0.1
Merge Deleted Records
Now correctly merging deleted records by deleting the record in the primary tree. This was implemented but untested and it was broken.
Corrected Mutator Unlocking
Sorted out the details of mutator unlocking. The mutator is now always unlocked, even in the case of an error. Also, I added a test for the edge case of calling unlock when no mutator is allocated.