Generate a changelog for the handbook
The handbook is a moving target, and keeping up is really hard. To mitigate this, we could leverage a git tag and view diffs. But that creates large blobs that contains stuff I'm not interested in.
This commmits introduces a way to generate the changelog, which after merging should allow us to generate/update it.
This is a first iteration, and misses good styles for example. But given its also an experiment, the current iteration should be enough.
Closes organization#183 (closed)