Issue #241 - add unit test for continuous pull replication

https://github.com/couchbase/couchbase-lite-java-core/issues/241
Issue #241 - override changeTrackerCaughtUp

https://github.com/couchbase/couchbase-lite-java-core/issues/241
Merge branch 'refs/heads/master' into feature/issue_241_java_core

Conflicts:
	src/androidTest/java/com/couchbase/lite/replicator/ChangeTrackerTest.java
	src/androidTest/java/com/couchbase/lite/replicator/ReplicationTest.java
Issue #241 - re-enable test

https://github.com/couchbase/couchbase-lite-java-core/issues/241
Merge pull request #374 from couchbase/feature/issue_241_java_core

Feature/issue 241 java core