Drop 0. from the version
It doesn't seem to me that Druid API is going to stabilize in the near
future (if ever), because there are so many extension points and something
is broken in every release. On the other hand, Druid is not Hadoop or
Spark, which have applications API. Druid API for extensions, not
applications. It is used by people who are closer to Druid development and
fixing their extensions is routine.
With that, I think it make sense to drop "0." from the Druid version and
call it Druid 14, Druid 15, etc.