Opam-publish 2.2.0

We are pleased to announce the minor release of opam-publish 2.2.0.

This opam-publish release consists of the following breaking change:

• Shorten the generated branch name. This is breaking change for people who want to force-push changes on an already opened PR using a previous version of opam-publish as the branch name might not be the same (#141)

and the following fixes:

• Fix the github markdown syntax generated by opam-publish (#131)
• Disambiguate GitHub archive URL computed from repository and tag (#135)
• Upgrade to cmdliner >= 1.1.0 (#134)
• Support git remotes with multiple push targets (#137)
• Fix broken state if the initial opam-repository clone fails (#140)