`0.4.0`

Performance Optimizations

Adding Fortran speedups for many crucial computation helpers including
- intersecting line segments
- (vectorized) Horner’s method for evaluating a Bézier curve at multiple parameters at once
- (vectorized) Horner’s method for evaluating a Bézier surface
- computing “linearization error” (how close a curve is to a line)
- specializing a Bézier curve to a sub-interval
- using Newton’s method to refine a curve-curve intersection
Adding _verify switch to Surface.locate() (doc) and Curve.intersect() (doc) to selectively disable overly defensive value checking. (Making sure to use this switch during “internal” computation.)
Making sure NumPy arrays are Fortran-contiguous as often as possible (e.g. snippets and source, via np.asfortranarray()). This is to avoid (and emphasize) a non-trivial overhead when passing a C-contiguous array to a Fortran function. (03a7242, 6064e4c, f1804f4)
Using Horner’s method in Curve.evaluate_multi() and Surface.evaluate_barycentric(), rather than inferior (sometimes non-vectorized) approaches (dee8181, 2611e64)
Made surface-surface intersection more resilient / lenient for corner intersections. For “nearby” intersections, parameter values can be rounded to 0 or 1. (4a8458c)

Adding optional strategy argument (one of geometric or algebraic) to the Surface.intersect() method
- Added “algebraic” IntersectionStrategy enum via curve implicitization (reference)
Adding Curve.reduce_() method which acts as a partial inverse to Curve.elevate() method. It is only a complete inverse when a curve is degree-elevated, otherwise it returns the “best” reduced form (in the least squares sense).

(Breaking change) Removing show keyword from Curve.plot() (doc), Surface.plot() (doc) and CurvedPolygon.plot() (doc)
Adding color keyword to Curve.plot() method
Adding alpha keyword to Curve.plot() method
(Breaking change) Splitting the Surface.evaluate_multi() method into Surface.evaluate_barycentric_multi() (doc) and Surface.evaluate_cartesian_multi() (doc)
Adding __dict__ helpers on Curve, CurvedPolygon and Surface. These are @propertys intended only for REPL use, since classes with __slots__ no longer have a __dict__ attribute.

Adding IntersectionClassification enum to docs (ref)
Moving most plotting into a dedicated module. More importantly, importing plotting helpers at runtime rather at import time. So if computational code never plots, it won’t eat the import cost of matplotlib. Removing matplotlib as a dependency.