v0.7.5

Moved from Travis CI to GitHub Actions. Very nice. Might investigate this a little more and see what we can do.
Otherwise, one small new addition: there is now an @artisan script tag to you don't need to do things like @php {{ @path:serve }}/artisan any more.
The new tag will refer to the artisan script in the serve directory which is useful if you need to run artisan commands against the outgoing deployment BEFORE it gets replaced. This means that @artisan will always refer to the current deployment in all hooks except after-live.