4.59.0
- Removed hard-dependency on pyfilesystem2 (``fs`` package) from ``fonttools[ufo]`` extra.
  This is replaced by the `fontTools.misc.filesystem` package, a stdlib-only, drop-in
  replacement for the subset of the pyfilesystem2's API used by ``fontTools.ufoLib``.
  The latter should continue to work with the upstream ``fs`` (we even test with/without).
  Clients who wish to continue using ``fs`` can do so by depending on it directly instead
  of via the ``fonttools[ufo]`` extra (#3885, #3620).
- [xmlWriter] Replace illegal XML characters (e.g. control or non-characters) with "?"
  when dumping to ttx (#3868, #71).
- [varLib.hvar] Fixed vertical metrics fields copy/pasta error (#3884).
- Micro optimizations in ttLib and sstruct modules (#3878, #3879).
- [unicodedata] Add Garay script to RTL_SCRIPTS (#3882).
- [roundingPen] Remove unreliable kwarg usage. Argument names aren’t consistent among
  point pens’ ``.addComponent()`` implementations, in particular ``baseGlyphName``
  vs ``glyphName`` (#3880).

4.58.5
- [feaLib] Don't try to combine ligature & multisub rules (#3874).
- [feaLib/ast] Use weakref proxies to avoid cycles in visitor (#3873).
- [varLib.instancer] Fixed instancing CFF2 fonts where VarData contains more than 64k items (#3858).

4.58.4
- [feaLib] Allow for empty MarkFilter & MarkAttach sets (#3856).

4.58.3
- [feaLib] Fixed iterable check for Python 3.13.4 and newer (#3854, #3855).

4.58.2
- [ttLib.reorderGlyphs] Handle CFF2 when reordering glyphs (#3852)
- [subset] Copy name IDs in use before scrapping or scrambling them for webfonts (#3853)

4.58.1
- [varLib] Make sure that fvar named instances only reuse name ID 2 or 17 if they are at the default location across all axes, to match OT spec requirement (#3831).
- [feaLib] Improve single substitution promotion to multiple/ligature substitutions, fixing a few bugs as well (#3849).
- [loggingTools] Make ``Timer._time`` a static method that doesn't take self, makes it easier to override (#3836).
- [featureVars] Use ``None`` for empty ConditionSet, which translates to a null offset in the compiled table (#3850).
- [feaLib] Raise an error on conflicting ligature substitution rules instead of silently taking the last one (#3835).
- Add typing annotations to T2CharStringPen (#3837).
- [feaLib] Add single substitutions that were promoted to multiple or ligature substitutions to ``aalt`` feature (#3847).
- [featureVars] Create a default ``LangSys`` in a ``ScriptRecord`` if missing when adding feature variations to existing GSUB later in the build (#3838).
- [symfont] Added a ``main()``.
- [cffLib.specializer] Fix rmoveto merging when blends used (#3839, #3840).
- [pyftmerge] Add support for cmap format 14 in the merge tool (#3830).
- [varLib.instancer/cff2] Fix vsindex of Private dicts when instantiating (#3828, #3232).
- Update text file read to use UTF-8 with optional BOM so it works with e.g. Windows Notepad.exe (#3824).
- [varLib] Ensure that instances only reuse name ID 2 or 17 if they are at the default location across all axes (#3831).
- [varLib] Create a dflt LangSys in a ScriptRecord when adding variations later, to fix an avoidable crash in an edge case (#3838).

4.58.0
- Drop Python 3.8, require 3.9+ (#3819)
- [HVAR, VVAR] Prune unused regions when using a direct mapping (#3797)
- [Docs] Improvements to ufoLib documentation (#3721)
- [Docs] Improvements to varLib documentation (#3727)
- [Docs] Improvements to Pens and pen-module documentation (#3724)
- [Docs] Miscellany updates to docs (misc modules and smaller modules) (#3730)
- [subset] Close codepoints over BiDi mirror variants. (#3801)
- [feaLib] Fix serializing ChainContextPosStatement and
  ChainContextSubstStatement in some rare cases (#3788)
- [designspaceLib] Clarify user expectations for getStatNames (#2892)
- [GVAR] Add support for new `GVAR` table (#3728)
- [TSI0, TSI5] Derive number of entries to decompile from data length (#2477)
- [ttLib] Fix `AttributeError` when reporting table overflow (#3808)
- [ttLib] Apply rounding more often in getCoordinates (#3798)
- [ttLib] Ignore component bounds if empty (#3799)
- [ttLib] Change the separator for duplicate glyph names from "#" to "." (#3809)
- [feaLib] Support subtable breaks in CursivePos, MarkBasePos, MarkToLigPos and
  MarkToMarkPos lookups (#3800, #3807)
- [feaLib] If the same lookup has single substitutions and ligature
  substitutions, upgrade single substitutions to ligature substitutions with
  one input glyph (#3805)
- [feaLib] Correctly handle <NULL> in single pos lookups (#3803)
- [feaLib] Remove duplicates from class pair pos classes instead of raising an
  error (#3804)
- [feaLib] Support creating extension lookups using useExtenion lookup flag
  instead of silently ignoring it (#3811)
- [STAT] Add typing for the simpler STAT arguments (#3812)
- [otlLib.builder] Add future import for annotations (#3814)
- [cffLib] Fix reading supplement encoding (#3813)
- [voltLib] Add some missing functionality and fixes to voltLib and VoltToFea,
  making the conversion to feature files more robust. Add also `fonttools
  voltLib` command line tool to compile VOLT sources directly (doing an
  intermediate fea conversion internally) (#3818)
- [pens] Add some PointPen annotations (#3820)

4.57.0
- [ttLib.__main__] Add `--no-recalc-timestamp` flag (#3771)
- [ttLib.__main__] Add `-b` (recalcBBoxes=False) flag (#3772)
- [cmap] Speed up glyphOrder loading from cmap (#3774)
- [ttLib.__main__] Improvements around the `-t` flag (#3776)
- [Debg] Fix parsing from XML; add roundtrip tests (#3781)
- [fealib] Support \*Base.MinMax tables (#3783, #3786)
- [config] Add OPTIMIZE_FONT_SPEED (#3784)
- [varLib.hvar] New module to add HVAR table to the font (#3780)
- [otlLib.optimize] Fix crash when the provided TTF does not contain a `GPOS` (#3794)

4.56.0
- [varStore] Sort the input todo list with the same sorting key used for the opimizer's output (#3767).
- [otData] Fix DeviceTable's ``DeltaValue`` repeat value which caused a crash after importing from XML and then compiling a GPOS containing Device tables (#3758).
- [feaLib] Make ``FeatureLibError`` pickleable, so client can e.g. use feaLib to can compile features in parallel with multiprocessing (#3762).
- [varLib/gvar] Removed workaround for old, long-fixed macOS bug about composite glyphs with all zero deltas (#1381, #1788).
- [Docs] Updated ttLib documentation, beefed up TTFont and TTGlyphSet explanations (#3720).

4.55.8
- [MetaTools] Fixed bug in buildUCD.py script whereby the first non-header line of some UCD text file was being skipped. This affected in particular the U+00B7 (MIDDLE DOT) entry of ScriptExtensions.txt (#3756).