Add Cassandra connector
Split CassandraClient into separate services
Add unit test with synthetic test data
Remove thread context classloader logic from Cassandra plugin
Support UDFs for internal plugins
Fix code style errors in tests
Enable Checkstyle for tests
Fix thread safety for FunctionRegistry
Fix handling of non-splittable files without blocks
Fix hive connector semaphore release bug
Add 0.58 release notes
[maven-release-plugin] prepare release 0.58
[maven-release-plugin] prepare for next development iteration
Fix hang in hive split source

Correctly decrement the outstandingSplitCount in getNextBatch
Add 0.59 release notes
[maven-release-plugin] prepare release 0.59
[maven-release-plugin] prepare for next development iteration
Fix memory (estimate) leak in TopNOperator
instanceof Slice is always false. removed superfluous code snippet
removed unnecessary unboxing