Make to_hashset 10x faster by removing 'optimization'
Merge branch 'master' of github.com:pangloss/pacer

* 'master' of github.com:pangloss/pacer:
  better to_hash_map
  Properly handle UTC DateTimes in the YAMLEncoder (used by Neo4j), and add better support for Dates
Don't use deprecated stopTransaction method
Minor tweaks to the test suite
Don't need this condition after all
Put back a couple of transactions in their relevant places. Test suite back to all green including tg, neo4j and orient.