Prepare v0.12.0

Prepare v0.11.0

Merge pull request #631 from hannesm/changes

changes for upcoming release 0.10.1

Prepare v0.10.0

Prepare v0.9.3

Update CHANGES for release v0.9.2

Prepare v0.9.1

Prepare v0.9.0

Fix the release process and delete -Werror when we generate the tarball

Add entries about #557