Canonical types feature

1. Added support for a list of canonical column data types. Added relevant mappings to types for the various supported catalogs.
2. Added support for Cassandra data store.
3. Added support for Redshift data store.
4. Removed presto dependencies.
5. Added more integrated tests.

Minor changes

Modification to the data metadata clean up process. Added more logging around the elastic search calls.

Minor changes

Fixed issues with internal event bus implementation.

Minor bug fix.

v0.1.51

Fixed issue where methods get_tables/get_databases fails when the pat…

Minor changes

v0.1.50

adding one logging messge to show the value of mergeIndex (#28)

Minor bug fix.

v0.1.49

Fixed issue where the old table info was missing user metadata which …

Minor fixes

1. Fixed the log message when loading catalogs. (#24)

2. Modified ElasticSearchUtilImpl to import the right Strings class.

Added features

1. Added notifications using SNS to signal about table/partition changes.
2. Added support to push documents to multiple indexes when under going elastic search reindex/migration.
3. Enabled checkstyle, findBugs and pmd during builds.
4. Minor bug fixes.

Minor change

v0.1.45

Fixed logic to consider a schema to not exist only when SchemaNotFoun…

Minor changes

v0.1.44

Fix build (#11)