Update version and metadata to release 2.2.0

Bump version to 2.1.2 and update metainfo

Merge pull request #26 from raboneko/weblate-flattool-ignition

Translations update from Weblate

Add 2.1.0 release information

Update 2.0 release date

Update release info wording

Bump version to 1.1.2

Add release metainfo

Add new release information

Update the release day because it became midnight