v2.33.0

• Support public.openTypePostUnderlinePosition lib key meant to clarify ambiguous meaning of underline position in post vs CFF table (unified-font-object/ufo-spec#217, #760).
• [instructionCompiler] Make logging less noisy (#767).
• Added allQuadratic=True compile option; when False, tells cu2qu to keep mix of cubic and quadratic curves (whichever has fewer points) as per glyf v1 draft spec proposal (#768, https://github.com/harfbuzz/boring-expansion-spec/blob/main/glyf1.md).