* Fix data directory deleted on migrations
* Fix issue #226
* Refactor entrypoint process to only delete DATADIR when
RECREATE_DATADIR is explicitly set to TRUE
* Refactor config to use DATADIR from environment variable
* Update README
* Refactor tests to use python
* Add collations tests
* Change travis config to omit docker image sharing
* Change tests for collation default
* Following up PR #228 about environment variable behaviour
* Add tests for datadir initializations
* Update Travis config
* Improve replication testing
Rizky Maulana Nugraha