Log Message:
ibm-plex-ttf: update to version 6.4.0

Changelog:

v6.4.0
[IBM PLEX MONO V2.4] - 2023-12-21
Added

    old-style numerals
    referenced in issue 418
    Bulgarian Cyrillic forms
    referenced in issue 448
    alternative shape for U+0023 NUMBER SIGN
    referenced in issue 401
    Cyrillic support for Abkhaz language
    referenced in issue 355
    support for pre-1918 Cyrillic
    referenced in issue 158
    U+2236 RATIO
    referenced in issue 199
    U+2219 BULLET OPERATOR
    referenced in issue 84
    U+2010-U+2015 NON-BREAKING HYPHEN, DASHES, etc.
    referenced in issue 84
    referenced in issue 317
    U+2028 LINE SEPERATOR
    referenced in issue 52
    U+2029 PARAGRAPH SEPERATOR
    referenced in issue 52
    U+202F NARROW NO-BREAK SPACE
    referenced in issue 282
    U+2008 PUNCTUATION SPACE
    U+200A HAIR SPACE
    referenced in issue 361
    U+200B ZERO WIDTH SPACE
    referenced in issue 84
    referenced in issue 318

Fixed

    Rendering of certain Cyrillic glyphs
    referenced in issue 410
    Difference in lineheight for SemiBold weight in some situations
    referenced in issue 408

Changed

    Improved shapes for U+0473 CYRILLIC SMALL LETTER FITA and U+0472 CYRILLIC \ 
CAPITAL LETTER FITA
    referenced in issue 158
    Changed U+00AD SOFT HYPHEN to empty non-spacing character
    Improved shapes for U+04AA CYRILLIC CAPITAL ES WITH DESCENDER and U+04AB \ 
CYRILLIC LOWERCASE ES WITH DESCENDER
    referenced in issue 498

[IBM PLEX SERIF V3.1] - 2023-11-27
Added

    Bulgarian Cyrillic forms
    referenced in issue 448

Changed

    Changed /softhyphen (U+00AD) to empty non-spacing character
    Improved shapes for U+04AA and U+04AB
    referenced in issue 498

[IBM PLEX SANS ARABIC V1.5] - 2023-10-31
Added

    Kerning for glyph /rreh-ar.fina (U+FB8D)
    referenced in issue 542

Changed

    Removed substitutions to glyph /allah-ar (U+FDF2) in rlig feature
    referenced in issue 525

[IBM PLEX SANS V3.5] - 2023-09-20
Added

    Bulgarian Cyrillic forms
    referenced in issue 448

Changed

    Changed /softhyphen (U+00AD) to empty non-spacing character