CORE-1751 More detailed API for returning changeSet statuses
CORE-1751 More detailed API for returning changeSet statuses

Added isRunReason convenience method
CORE-1751 More detailed API for returning changeSet statuses

Added javadoc
CORE-1751 More detailed API for returning changeSet statuses

Changed API to support potentially multiple reasons for skipping changeSet
CORE-1751 More detailed API for returning changeSet statuses

Removed not-really-a-test
Merge branch 'CORE-1751_improved_status_api'