Equal, EqualRadius, PointOnObject sketch constraints

[matscalia]

I was writing a compatibility script to use freecad to define sketches interactively and export them cadquery and I noticed that these three kinds of constraints are missing from cadquery sketch constraints. I couldn't think of any easy solution to circumvent this limitation when the sketch is defined in an external program. Is there any interest to implement them? I should have some time to work on them unless there is some technical reason not to.

[adam-urbanczyk]

If you are willing to implement them, it would be great. Please try to minimize the amount of changes introduced.

[matscalia]

Absolutely. Let's see what I can do!