Fonttools

----------------------------

- [varLib] Improved support-resolution algorithm. Previously, the on-axis
masters would always cut the space. They don't anymore. That's more
consistent, and fixes the main issue Erik showed at TYPO Labs 2017.
Any varfont built that had an unusual master configuration will change
when rebuilt (42bef17, a523a697,
https://github.com/googlei18n/fontmake/issues/264).
- [varLib.models] Added a ``main()`` entry point, that takes positions and
prints model results.
- [varLib.plot] Added new module to plot a designspace's
VariationModel. Requires ``matplotlib``.
- [varLib.mutator] Added -o option to specify output file path (2ef60fa).
- [otTables] Fixed IndexError while pruning of HVAR pre-write (6b6c34a).
- [varLib.models] Convert delta array to floats if values overflows signed
short integer (0055f94).

----------------------------

- [otBase] Don't fail during ``ValueRecord`` copy if src has more items.
We drop hinting in the subsetter by simply changing ValueFormat, without
cleaning up the actual ValueRecords. This was causing assertion error if
a variable font was subsetted without hinting and then passed directly to
the mutator for instantiation without first it saving to disk.

----------------------------

- [varLib] Don't remap the same ``DeviceTable`` twice in VarStore optimizer
(1206).
- [varLib] Add ``--disable-iup`` option to ``fonttools varLib`` script,
and a ``optimize=True`` keyword argument to ``varLib.build`` function,
to optionally disable IUP optimization while building varfonts.
- [ttCollection] Fixed issue while decompiling ttc with python3 (1207).

----------------------------

- [ttGlyphPen] Decompose composite glyphs if any components' transform is too
large to fit a ``F2Dot14`` value, or clamp transform values that are
(almost) equal to +2.0 to make them fit and avoid decomposing (1200,
1204, 1205).
- [ttx] Added new ``-g`` option to dump glyphs from the ``glyf`` table
splitted as individual ttx files (153, 1035, 1132, 1202).
- Copied ``ufoLib.filenames`` module to ``fontTools.misc.filenames``, used
for the ttx split-glyphs option (1202).
- [feaLib] Added support for ``cvParameters`` blocks in Character Variant
feautures ``cv01-cv99`` (860, 1169).
- [Snippets] Added ``checksum.py`` script to generate/check SHA1 hash of
ttx files (1197).
- [varLib.mutator] Fixed issue while instantiating some variable fonts
whereby the horizontal advance width computed from ``gvar`` phantom points
could turn up to be negative (1198).
- [varLib/subset] Fixed issue with subsetting GPOS variation data not
picking up ``ValueRecord`` ``Device`` objects (54fd71f).
- [feaLib/voltLib] In all AST elements, the ``location`` is no longer a
required positional argument, but an optional kewyord argument (defaults
to ``None``). This will make it easier to construct feature AST from
code (1201).

----------------------------

- [designspaceLib] Added an optional ``lib`` element to the designspace as a
whole, as well as to the instance elements, to store arbitrary data in a
property list dictionary, similar to the UFO's ``lib``. Added an optional
``font`` attribute to the ``SourceDescriptor``, to allow operating on
in-memory font objects (1175).
- [cffLib] Fixed issue with lazy-loading of attributes when attempting to
set the CFF TopDict.Encoding (1177, 1187).
- [ttx] Fixed regression introduced in 3.22.0 that affected the split tables
``-s`` option (1188).
- [feaLib] Added ``IncludedFeaNotFound`` custom exception subclass, raised
when an included feature file cannot be found (1186).
- [otTables] Changed ``VarIdxMap`` to use glyph names internally instead of
glyph indexes. The old ttx dumps of HVAR/VVAR tables that contain indexes
can still be imported (21cbab8, 38a0ffb).
- [varLib] Implemented VarStore optimizer (1184).
- [subset] Implemented pruning of GDEF VarStore, HVAR and MVAR (1179).
- [sfnt] Restore backward compatiblity with ``numFonts`` attribute of
``SFNTReader`` object (1181).
- [merge] Initial support for merging ``LangSysRecords`` (1180).
- [ttCollection] don't seek(0) when writing to possibly unseekable strems.
- [subset] Keep all ``--name-IDs`` from 0 to 6 by default (1170, 605, 114).
- [cffLib] Added ``width`` module to calculate optimal CFF default and
nominal glyph widths.
- [varLib] Don’t fail if STAT already in the master fonts (1166).

----------------------------

- [subset] Support subsetting ``endchar`` acting as ``seac``-like components
in ``CFF`` (fixes 1162).
- [feaLib] Allow to build from pre-parsed ``ast.FeatureFile`` object.
Added ``tables`` argument to only build some tables instead of all (1159,
1163).
- [textTools] Replaced ``safeEval`` with ``ast.literal_eval`` (1139).
- [feaLib] Added option to the parser to not resolve ``include`` statements
(1154).
- [ttLib] Added new ``ttCollection`` module to read/write TrueType and
OpenType Collections. Exports a ``TTCollection`` class with a ``fonts``
attribute containing a list of ``TTFont`` instances, the methods ``save``
and ``saveXML``, plus some list-like methods. The ``importXML`` method is
not implemented yet (17).
- [unicodeadata] Added ``ot_tag_to_script`` function that converts from
OpenType script tag to Unicode script code.
- Added new ``designspaceLib`` subpackage, originally from Erik Van Blokland's
``designSpaceDocument``: https://github.com/LettError/designSpaceDocument
NOTE: this is not yet used internally by varLib, and the API may be subject
to changes (911, 1110, LettError/designSpaceDocument28).
- Added new FontTools icon images (8ee7c32).
- [unicodedata] Added ``script_horizontal_direction`` function that returns
either "LTR" or "RTL" given a unicode script code.
- [otConverters] Don't write descriptive name string as XML comment if the
NameID value is 0 (== NULL) (1151, 1152).
- [unicodedata] Add ``ot_tags_from_script`` function to get the list of
OpenType script tags associated with unicode script code (1150).
- [feaLib] Don't error when "enumerated" kern pairs conflict with preceding
single pairs; emit warning and chose the first value (1147, 1148).
- [loggingTools] In ``CapturingLogHandler.assertRegex`` method, match the
fully formatted log message.
- [sbix] Fixed TypeError when concatenating str and bytes (1154).
- [bezierTools] Implemented cusp support and removed ``approximate_fallback``
arg in ``calcQuadraticArcLength``. Added ``calcCubicArcLength`` (1142).