Log Message:
py-fonttools: updated to 4.28.1

4.28.1 (released 2021-11-08)
----------------------------
- [subset] Fixed AttributeError while traversing a color glyph's Paint graph \ 
when there is no
  LayerList, which is optional

4.28.0 (released 2021-11-05)
----------------------------
- Dropped support for EOL Python 3.6, require Python 3.7
- [ufoLib/glifLib] Make filename-clash checks faster by using a set instead of a list
- [subset] Don't crash if optional ClipList and LayerList are ``None`` (empty)
- [OT-SVG] Removed support for old deprecated version 1 and embedded color palettes,
  which were never officially part of the OpenType SVG spec. Upon compile, reuse \ 
offsets
  to SVG documents that are identical
- [feaLib] Added support for Variable Feature File syntax. This is experimental \ 
and subject
  to change until it is finalized in the Adobe FEA spec
- [unicodedata] Update Scripts/ScriptExtensions/Blocks to UnicodeData 14.0

4.27.1 (released 2021-09-23)
----------------------------
- [otlLib] Fixed error when chained contextual lookup builder overflows
- [bezierTools] Fixed two floating-point bugs: one when computing `t` for a point
  lying on an almost horizontal/vertical line; another when computing the \ 
intersection
  point between a curve and a line

4.27.0 (released 2021-09-14)
----------------------------
- [ttLib/otTables] Cleaned up virtual GID handling: allow virtual GIDs in \ 
``Coverage``
  and ``ClassDef`` readers; removed unused ``allowVID`` argument from ``TTFont``
  constructor, and ``requireReal`` argument in ``TTFont.getGlyphID`` method.
  Make ``TTFont.setGlyphOrder`` clear reverse glyphOrder map, and assume \ 
``glyphOrder``
  internal attribute is never modified outside setGlyphOrder; added \ 
``TTFont.getGlyphNameMany``
  and ``getGlyphIDMany``
- [py23] Dropped internal use of ``fontTools.py23`` module to fix deprecation \ 
warnings
  in client code that imports from fontTools
- [subset] Fix subsetting COLRv1 clip boxes when font is loaded lazily

4.26.2 (released 2021-08-09)
----------------------------
- [otTables] Added missing ``CompositeMode.PLUS`` operator

4.26.1 (released 2021-08-03)
----------------------------
- [transform] Added ``transformVector`` and ``transformVectors`` methods to the
  ``Transform`` class. Similar to ``transformPoint`` but ignore the translation
  part

4.26.0 (released 2021-08-03)
----------------------------
- [xmlWriter] Default to ``"\n"`` for ``newlinestr`` instead of \ 
platform-specific
  ``os.linesep``
- [otData] Define COLRv1 ClipList and ClipBox
- [removeOverlaps/instancer] Added --ignore-overlap-errors option to work around
  Skia PathOps.Simplify bug
- NOTE: This will be the last version to support Python 3.6. FontTools will require
  Python 3.7 or above from the next release