0.0.22.alpha1 prerelease

This is a short term release. I expect to remove this tag at some point after
I cut the next release.

The commits between 0.0.21 on main and this commit are likely to be rewritten,
as this is not a finalized changeset.

I may drop features between now and the next release, but this is quite unlikely.

I expect to leave this release up for some period after the next official
release.

Key features:
- Support for languages other than English, see:
  https://github.com/check-spelling/check-spelling/wiki/Feature%3A-Configurable-word-characters

version

@@ -1 +1 @@
-0.0.21
+0.0.22.alpha1