Version 2.2.0

There were 5 changes in Retype 2.2.0.

New

1. Official Retype docker images at DockerHub's retypeapp/retype repository. See #122.
2. New generator.recase project config to instruct Retype on when to recase file and folder names. See #302.

Improved

1. Add GitHub Action annotation to announce availability of Retype v2.

Fixed

1. Author, date, and category metadata being rendered above page title.
2. top.md should be excluded from card generation.