Refactoring RESTClientFactory and R2Store to accept a D2 client
Naming convention cleanup of R2Store
Updating build.properties and release notes for Voldemort jar release 1.5.3
Check stats object to be null to avoid NPE
Re-enabling the auto format on save option
prevent NPE in worker thread when shutdown
Fixing bug to release lock when an record was not pruned
Fixing throttling in repair job and prune job