High time to think about releasing 22.0

[Ben Wing]

It's been three years since a release of XEmacs.

I assume 21.5 is going to be called 22.0.

But what's missing?

My ideas:

[1] Workspace integration of my remaining ws's.

[2] Ideally the widgets should be fixed, but that's a long multiyear
process.

[3] I would really like to make MULE be the default.  This requires
finishing the 8-bit support that I've written and which is 90% there.

Anything else?