Add a changelog#366

Merged

christianlupus merged 3 commits intonextcloud:masterfrom

christianlupus-nextcloud:dev/changelog

Nov 1, 2020

Commits on Oct 31, 2020

Added a first version of a changelog starting with the most recent version
christianlupus
committed

Commits on Nov 1, 2020

Add a check using github actions to enforce change in the changelog
christianlupus
committed
Updated changelog to contain changes in this branch as well.
christianlupus
committed