Don’t need to handle features.
Restructure things a bit.

The geomify method is now responsible for converting multigeometries into their
singular equivalents when possible. The linearize method no longer applies an
implicit transform (quantization); instead, that transform must be done
separately. Lastly, quantization now guarantees that quantized lines have 2+
points and quantized rings have 4+ points, even if some points are coincident.
Regenerate examples.