Changelog incomplete

[SimJoSt]

I just wanted to make the update from 0.8.0 to 0.10.0 and checked the changelogs as always. Unfortunately they seem to be incomplete.
After 0.8.0 there have not been any releases tagged, like before: https://github.com/undo-ransomware/ransomware_detection/releases
And the CHANGELOG.md was only update for 0.9.0: https://github.com/undo-ransomware/ransomware_detection/blob/master/CHANGELOG.md

I am able to check the commit history, but not everybody can and it's quite hard to see which commits made it into 0.10.0 or are preparations for the next version without and tags or clear commit messages for releases.

Please extend the changelogs and keep up the good work 💪