0.7.0
Set a limit of 1s on minimum polling interval.
Increase the number of retries from 3 to 5. Increase the time between retries.
Add sql support for spark commands.
Add support for specifying persistent security group.
Add support for creating hadoop2 cluster.
Upload the shaded artifact to maven central as well.
Add support for creating spark cluster.
Fix scheduler creation issue. This changes the API a bit but the earlier one was not working.
Fix JsonParseException when CPU value is out of range of int. We now return long instead of int for a couple of fields. This will require code change.