ksh 93u+m/1.0.0-rc.1

We're nearly there!

I intend to release ksh 93u+m/1.0.0 on 2022-08-01, precisely ten years after the last canonical 93u+ release.

We have a week until then, so here's a release candidate. Please try as hard as you can to break it, and to help fix known bugs. You can report your findings or just talk about it on the GitHub discussion thread associated with this release.

Full Changelog: v1.0.0-beta.2...v1.0.0-rc.1