Now PRs will run two diff-shades jobs, "preview-changes" which formats
all projects with preview=True, and "assert-no-changes" which formats
all projects with preview=False. The latter also fails if any changes
were made.
Pushes to main will only run "preview-changes"
Also the workflow_dispatch feature was dropped since it was
complicating everything for little gain.
This also introduces a script so we can reference the latest version in
the example pre-commit configuration in the docs without forgetting to
update it when doing a release!
Commit history before merge:
* document jupyter hook
* note minimum version
* add check for pre-commit version
* use git tag
* curl api during ci
* parse version from changes file
* fixup script
* rename variables
* Tweak the docs & magical script
* fix couple of typos
* pin additional dependencies in hook
* Add types-PyYAML to lockfile
Co-authored-by: Richard Si <63936253+ichard26@users.noreply.github.com>
