v1.8

Adds optional port parameter for Cassandra connection.

v1.7

Properly closes connection to cluster.

v1.6

Adds configurable default_timeout setting to Cassandra driver session

v1.5

• Compatibility updates for Cassandra driver 3.0.0 release
• Adds protection against adding duplicate schema migration files
• Adds proper exit code when configuration files are missing
• Integration tests added to tox & Travis CI