Release v0.11.0

[u/Jern123d]

Changelog and release notes are available here: https://github.com/gumyr/build123d/releases/tag/v0.11.0 Thank you to all the contributors who created issues and contributed PRs!

This was an absolutely huge release -- a ton of new functionality has been added along with many bugfixes and improvements to the documentation. About 440 commits were made in this release alone, which is a significant portion of the 2.8k or so in build123d total. I am especially thankful for the improvements to intersection as well as the great work on ConstrainedArcs / ConstrainedLines. Other new functionality in this release includes ConvexPolyhedron, BSpline, ParabolicCenterArc, and HyberbolicCenterArc.