GREN changelog action

Update changelog file using Gren.

Usage

Configure Gren using .grenrc in your repository and run this action in GitHub actions workflow:

name: Release notes

on: [release]
  types: [published]

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: lakto/[email protected]
        env:
          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
        with:
          options: '--generate --override --changelog-filename=RELEASE_NOTES.md'

In options you can add all options from Gren itself except of --username, --repo and --token. They are already part of the lakto/gren-changelog-action entrypoint script.