RELEASE 2.4.1: Update To Release Notes Editor Contents

This is an improvement to the recent release 2.3.0.

Now, the release notes file contains a copy of the current changelog for reference - it gets stripped out of the notes afterwards. You will see something like this:

<Enter your release notes here>

####<CHANGELOG> This is for reference only - this line and all following lines will be stripped from 
the release notes.

(Changelog entries...)