Github user tamaashu commented on the issue:
https://github.com/apache/zookeeper/pull/698
> Do we need this on 3.4, I thought we only do bug fixes on 3.4.
For code we only do bug fixes, but the documentation changes (migration to
MarkDown) have been backported to branch-3.4 too. It makes more simple to make
a (bugfix) release, e.g. you don't have to install Forrest on your build
machines anymore to generate the HTMLs.---
