Exposed wrapWatcher and added SolrZkWatcher interface
Exposed wrapWatcher method - SOLR-6621
Initial replicator thread
Merge branch 'solr6273' into cdcr-13
Initial replicator thread
Extract state managers. Improved process workflow logic. Added thread scheduler logic.
Merge branch 'solr6621' into cdcr-13
Fixed issue 6621 with zookeeper watcher
Fixed comment
Merged with cdcr-15
Refactored code. Improved state logic. Improved logging.
Added task queue to thread pool. Fixed initialisation of replicator manager.
Improved documentation
Improved documentation
Merge pull request #6 from sindicetech/cdcr-13

Cdcr 13
Merge branch 'solr6273' into cdcr-15