Merge pull request #771 from openzim/version_8.1.1

Merge pull request #750 from openzim/version_8.1.0

New version 8.0.1

Merge pull request #721 from openzim/version_8.0.0

New version 8.0.0

Merge pull request #699 from openzim/release_7.2.2

New version 7.2.2

Merge pull request #694 from openzim/release_7.2.1

Merge pull request #662 from openzim/release_7.2.0

Merge pull request #655 from openzim/release_7.1.0

Merge pull request #630 from openzim/prepare_release

New version 6.3.2