Tinyspline

- Add support for macOS M1
- MacOS binaries are no longer linked against the runtime libraries of the target language
- Add functions for sub-spline extraction
- Add functions for the computation of chord lengths
- Add functions for the computation of equidistant knot sequences
- Bug fixes

What's Changed
* Fix typos by luzpaz in https://github.com/msteinbeck/tinyspline/pull/195
* Fix python build with debug binaries installed by IlgarLunin in https://github.com/msteinbeck/tinyspline/pull/203
* Find python by msteinbeck in https://github.com/msteinbeck/tinyspline/pull/205
* fixed test case for norm by marco-langer in https://github.com/msteinbeck/tinyspline/pull/206

New Contributors
* IlgarLunin made their first contribution in https://github.com/msteinbeck/tinyspline/pull/203
* marco-langer made their first contribution in https://github.com/msteinbeck/tinyspline/pull/206

**Full Changelog**: https://github.com/msteinbeck/tinyspline/compare/v0.4.0...v0.5.0

What's Changed
* Fix memory issues. by msteinbeck in https://github.com/msteinbeck/tinyspline/pull/178
* Morph by msteinbeck in https://github.com/msteinbeck/tinyspline/pull/180
* Improve test framework and tests by msteinbeck in https://github.com/msteinbeck/tinyspline/pull/181
* Fix FLTK example build by julianoes in https://github.com/msteinbeck/tinyspline/pull/183
* Rename `tinysplinecpp.h` to `tinysplinecxx.h` by Gnimuc in https://github.com/msteinbeck/tinyspline/pull/185

New Contributors
* julianoes made their first contribution in https://github.com/msteinbeck/tinyspline/pull/183
* Gnimuc made their first contribution in https://github.com/msteinbeck/tinyspline/pull/185

**Full Changelog**: https://github.com/msteinbeck/tinyspline/compare/v0.3.0...v0.4.0