Update release notes

I saw the latest release of Chocolatey and your release notes are very close to what I generate with a tool I am working on called [GitReleaseNotes](https://github.com/JakeGinnivan/GitReleaseNotes). So I decided to use this as a demo and hopefully help you out at the same time.
Tracking at https://github.com/JakeGinnivan/GitReleaseNotes/issues/54