v3.12.1

What's Changed

• Fixing conda deploy by @timryanb in #452
• Improve ESP/CAPS installation with error handling by @timryanb in #453
• Updating broken cylinder C++ example to use new enum API by @timryanb in #454
• Fix cross section bug in TACSIsoTubeBeam by @A-CGray in #455

Full Changelog: v3.12.0...v3.12.1