Log Message:
py-fonttools: updated to 3.30.0

3.30.0:
- Skip building noop class PairPos subtables when Coverage is NULL
- Expose the previously reserved bit flag OVERLAP_SIMPLE of
  glyf table's contour points in the TTX dump. This is used in some
  implementations to specify a non-zero fill with overlapping contours.
- Added support for decompiling/compiling TS1C tables containing
  VTT sources for cvar variation table.
- Use fontTools.designspaceLib to read DesignSpaceDocument. The
  fontTools.varLib.designspace module is now deprecated and will be removed
  in future versions. The presence of an explicit axes element is now
  required in order to build a variable font.
- Implemented building GSUB FeatureVariations table from the rules
  element of DesignSpace document
- Added --no-layout-closure option to not expand the subset with
  the glyphs produced by OpenType layout features. Instead, OpenType features
  will be subset to only rules that are relevant to the otherwise-specified
  glyph setpy-fonttools: updated to 3.30.0