v2.9b

  * Add new `Letters=Uppercase` (LuaLaTeX only) as an interface to `l…

…uaotfload`

    feature which automatically performs case-changing at the font level
    (i.e., not using macros to process the text tokens). (#461)
  * Fix long-standing bug when loading fonts which only have extensions specified internally to the font
    shape (#504). E.g.:

        \setmainfont{pagella}[ UprightFont = texgyrepagella-regular.otf ]

  * If a font is loaded with a specific script (e.g. `Script=CJK`) and it is not
    available within the font, `fontspec` previously would fall back on a default script.
    This is now changed to always pass through the requested script so the renderer can
    make use of that information regardless of whether the font itself supports the script.
    (#507)
  * Remove LuaTeX code that resets various `hypenchar` settings seemingly erroneously. (#344)
  * Rework documentation to remove reference to local and non-free fonts. This allows
    compilation via Github Actions, which will aid streamlining/automating releases in the future. (#157, #465)
  * Adjust approach to removing spaces from font names internally. This may have unintended
    consequences, please write if so. (#484)
  * Work around clash if a class defines an option of (say) `math=foo`, where `fontspec`
    is expecting `math=true`. Now, the global option will be ignored. (#501)