update to node 20

bump version of actions core

deprecate set output

Update v1 tag

compile ts

update all dependencies

Bump @types/node from 12.6.9 to 14.11.2

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 12.6.9 to 14.11.2.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Merge pull request #25 from aka-tpayne/master

Remove refs/heads from incoming branch variable

compile to single file

Update README.md