ID: 15287
Title: Fix KeyError in changelog view
Component: Setup
Level: 1
Class: Bug fix
Version: 2.2.0p4
It was possible, that the changelog view did not list all werks and showed an
error `KeyError ((<Compatibility.COMPATIBLE: 'yes'>, True))`. This could
happen
for werks that where incompatible but where later on changed to compatible, and
were acknowledged while being incompatible.