Contents section for releases

[TTitcombe]

Is your feature request related to a problem? Please describe. For changelogs with lots of releases, it would be useful to have an overview of releases in the form on a contents at the top of the document.

Describe the solution you'd like Add a contents section, with each release as a new entry. Release entries should be of the form - <VERSION> - <DATE, just like their headers. Clicking a release entry jumps you to the relevant release section.

Describe alternatives you've considered None

Additional context N/A