[DISCUSS] Apache Ratis 0.3.0 release

[Tsz Wo Sze]

Hi,

We have around 80 commits after 0.2.0 release.  How about we start
preparing Ratis 0.3.0 release?

We may create a 0.3.0 branch and change trunk to 0.4.0.  Then, we can
stabilize 0.3.0 before starting a vote.

Tsz-Wo