Drop future support for Windows versions

[mpogue2]

I don't think anybody is using them, so continued support is not useful.

[danlyke]

I've got at least one person who'd like to use it, but we keep having huge performance issues when we try it on his machine. I suspect we've got a chicken/egg problem with the Windows version...

[mpogue2]

I think I fixed those performance problems long ago, and it was his action item to re-test. I don't think he ever did, but IIRC I left the bug open.
It's possible some people might want SquareDesk/WIN for the built-in SD, but lots of callers are quite happy with the 1975-style graphics that SD on Windows provides.
I've done a lot of Windows builds, and it's a PITA to keep up. With no real customers (OK, maybe one potential customer :-), I can't see continuing to invest the time. The one Windows customer I knew of who was using it (Nikki) moved to MacOS a while ago.

[danlyke]

Yeah, I don't get to testing very often, but last time I tested it seemed to work well on one of his machines, and then abysmally on another. I should see what the state of my Windows VM is so that I can do Windows builds.

[mpogue2]

Tom Miller is interested in using SquareDesk on an HP laptop for the SD feature. It works nice over Zoom. Could be a reason to release again on Windows.

[mpogue2]

I think we need a maintainer for this first -- somebody who is willing to take this on. It's not a trivial amount of work to support a platform, especially if (like me) they don't use that platform on a daily basis.