Merge pull request #69 from neilime/dependabot/github_actions/actions…

…/stale-6

Merge pull request #66 from neilime/dependabot/composer/phpunit/phpun…

…it-tw-9.5.21

Merge pull request #63 from neilime/ci/fix-publish

ci: fix publish

Merge pull request #59 from neilime/dependabot/github_actions/actions…

…/upload-artifact-3

build(deps): bump actions/upload-artifact from 2 to 3

ci: remove composer.lock

ci: migrate to github action

Allows setting a custom instance of the CssLintProperties helper

Update README.md

Update README.md

Update .travis.yml