Fix CHANGELOG.md formatting for entry v3.3.0

Entry `v3.3.0` has formatting problem where it is not formatted as a bullet list in the markdown.
Merge pull request #72 from maoueh/patch-1

Fix CHANGELOG.md formatting for entry v3.3.0 (Merge under Obvious Fix Rule)
Refactoring trying to fix some logic issues
Merge branch 'COOK-3652-bugfix' of https://github.com/svanharmelen/postfix into COOK-3652-bugfix