unify-flowret-1.4.0

1. Documentation updated for reopen API
2. Updated exception handling to take care of Flowret not proceeding ahead in certain cases if an exception is thrown from an event handler
3. startCase method now throws an exception instead of returning null if an exception is encountered. This may be a breaking change for consumers who were testing for null to see if the case started or not
4. Updated unify-jdocs dependency