• [otData/otConverters] Added support for 'biased' PaintSweepGradient start/end angles to match latest COLRv1 spec (#2743).
• [varLib.instancer] Fixed bug in _instantiateFeatureVariations when at the same time pinning one axis and restricting the range of a subsequent axis; the wrong axis tag was being used in the latter step (as the records' axisIdx was updated in the preceding step but looked up using the old axes order in the following step) (#2733, #2734).
• [mtiLib] Pad script tags with space when less than 4 char long (#1727).
• [merge] Use '.' instead of '#' in duplicate glyph names (#2742).
• [gvar] Added support for lazily loading glyph variations (#2741).
• [varLib] In build_many, we forgot to pass on colr_layer_reuse parameter to the build method (#2730).
• [svgPathPen] Add a main that prints SVG for input text (6df779f).
• [cffLib.width] Fixed off-by-one in optimized values; previous code didn't match the code block above it (2963fa5).
• [varLib.interpolatable] Support reading .designspace and .glyphs files (via optional glyphsLib).
• Compile some modules with Cython when available and building/installing fonttools from source: varLib.iup (35% faster), pens.momentsPen (makes varLib.interpolatable 3x faster).
• [feaLib] Allow features to be built for VF without also building a GDEF table (e.g. only build GSUB); warn when GDEF would be needed but isn't requested (#2705, #2694).
• [otBase] Fixed AttributeError when uharfbuzz < 0.23.0 and repack method is missing (32aa8ea).
  Use new uharfbuzz.repack_with_tag when available (since uharfbuzz>=0.30.0), enables table-specific optimizations to be performed during repacking (#2724).
• [statisticsPen] By default report all glyphs (4139d89). Avoid division-by-zero (52b28f9).
• [feaLib] Added missing required argument to FeatureLibError exception (#2693)
• [varLib.merge] Fixed error during error reporting (#2689). Fixed undefined NotANone variable (#2714).