The major change in this release is that action-validator now uses a list of files known to git when checking whether paths refer to files that actually exist.
This is good both because it is more correct (it won't false-positive on files that only exist in a local working copy), and also because it should greatly improve performance in large working copies.
Thanks to Antti Harju (@anttiharju) for this change.
We also provide a pre-built GitHub action now, so you can run action-validator in your own workflows with the simple snippet given in the README.
This exists also due to the efforts of Antti.