New Hackage package: brush-strokes Bézier toolkit

I am ready to announce the first release of the brush-strokeslibrary, which contains operations with quadratic/cubic Béziers that I needed to compute brush strokes. Please refer to the readme for details! I am sure there are still many rough edges, but I think it’s ready for general use. The next step is to improve the performance of the cusp-finding code, with work-in-progress for using Taylor models instead of interval arithmetic. I’ve been using this library (in tandem with the companion brush-stroking library, using Cairo as a rendering backend) to generate (vector!) shakuhachi scores like the following: