Log Message:
py-fonttools: updated to 4.25.2

4.25.2 (released 2021-07-26)
----------------------------
- [COLRv1] Various changes to sync with the latest CORLv1 draft spec. In particular:
  define COLR.VarIndexMap, remove/inline ColorIndex struct, add VarIndexBase to \ 
``PaintVar*`` tables
  add reduced-precicion specialized transform Paints;
  define Angle as fraction of half circle encoded as F2Dot14;
  use FWORD (int16) for all Paint center coordinates;
  change PaintTransform to have an offset to Affine2x3;
- [ttLib] when importing XML, only set sfntVersion if the font has no reader and \ 
is empty

4.25.1 (released 2021-07-16)
----------------------------
- [ttGlyphPen] Fixed bug in ``TTGlyphPointPen``, whereby open contours (i.e. starting
  with segmentType "move") would throw ``NotImplementedError``. They \ 
are now treated
  as if they are closed, like with the ``TTGlyphPen``

4.25.0 (released 2021-07-05)
----------------------------
- [tfmLib] Added new library for parsing TeX Font Metric (TFM) files
- [TupleVariation] Make shared tuples order deterministic on python < 3.7 where
  Counter (subclass of dict) doesn't remember insertion order
- [otData] Renamed COLRv1 structs to remove 'v1' suffix and match the updated draft
  spec: 'LayerV1List' -> 'LayerList', 'BaseGlyphV1List' -> 'BaseGlyphList',
  'BaseGlyphV1Record' -> 'BaseGlyphPaintRecord'
  Added 8 new ``PaintScale*`` tables: with/without centers, uniform vs non-uniform.
  Added ``*AroundCenter`` variants to ``PaintRotate`` and ``PaintSkew``: the default
  versions no longer have centerX/Y, but default to origin.
  ``PaintRotate``, ``PaintSkew`` and ``PaintComposite`` formats were re-numbered.
  NOTE: these are breaking changes; clients using the experimental COLRv1 API will
  have to be updated
- [pointPens] Allow ``GuessSmoothPointPen`` to accept a tolerance. Fixed call to
  ``math.atan2`` with x/y parameters inverted. Sync the code with fontPens
- [post] Fixed parsing ``post`` table format 2.0 when it contains extra garbage
  at the end of the stringData array
- [subset] drop empty features unless 'size' with FeatureParams table
- [otlLib] Added ``otlLib.optimize`` module; added GPOS compaction algorithm.
  The compaction can be run on existing fonts with ``fonttools otlLib.optimize``
  or using the snippet ``compact_gpos.py``. There's experimental support for
  compacting fonts at compilation time using an environment variable, but that
  might be removed later