FreeCAD 0.21

It's not in homebrew yet (and I've so far stayed away from anything that is a bit nightly/weekly etc.) but there are several things in here that are important:

First, while they don't have a fix in the code for it yet, they've done a bunch of preparatory work on the topological naming problem -- foundational work behind the scenes that means the core codebase doesn't fall behind while they work on that, and they can do a release in the meantime. A fix for TNP is delayed a bit longer but they appear to be going about things in a sane way.

Then there are loads of comfort and usefulness things like:

- Draft PointArray improvements - Circle to circle and to line distance constraints in the Sketcher, among other things - B-spline improvements (and Join Curves) - Closed loft support in Part Design - the navigator is better and there's a new turntable view mode - fixes to Persistent Section Cut apparently make it actually usable now

I'm looking forward to the upgrade; I really like FreeCAD and I'm increasingly hopeful about it.

Edit: oh and aarch64 support in Linux, by the look of it, making a bunch of high DPI chromebooks an interesting choice for FreeCAD machines. Plus some python package dependency management in the Add-ons manager.