New Stuff

• Added set-colors command (#2291, #2232)

Fixes

• nvm_die_on_prefix: only grep lines starting with env var name (#2347)

Tests

• Run fast test suite in clean environment (#2336)
• partially migrate to Github Actions
• Add shellcheck workflow (#2351)
• Add release test workflow (#2355)
• add "Allow Edits" workflow
• switch Automatic Rebase workflow to pull_request_target event