v0.8.0

Added

• New, NewSplit and NewDiffView work without fontconfig, on Windows,
  macOS and a Linux that lacks it: they read the fonts in the platform's font
  directories (%WINDIR%\Fonts and the user's on Windows; /System/Library/Fonts,
  /Library/Fonts and ~/Library/Fonts on macOS; the XDG ones on Linux), match
  the family by the name each font carries, and fall back to those fonts for a
  character the family lacks, CJK included. "monospace" is the platform's
  own (Cascadia Mono or Consolas on Windows, Menlo on macOS). Where fontconfig
  is installed nothing changes.
• ErrFontNotFound, what New fails with, without fontconfig, when no
  installed font is of the family asked for.

Changed

• New no longer fails with ErrNoFontconfig where fontconfig is missing.
  A caller that tested for it to fall back to NewFromFonts tests for
  ErrFontNotFound instead.

Deprecated

• ErrNoFontconfig: New never returns it.

Fixed

• A family whose styles live in one collection file (.ttc) draws each
  style from its own font. fontconfig names a font in a collection by file
  and index, and the index was dropped: every style came from the file's first
  font, so bold or italic text could come out regular, or in another family
  the collection holds.
• A character the family lacks is drawn from the font fontconfig ranks
  first, also when that font is in a collection. The fallback took the
  collection's first font instead: drawn bold or in another family the file
  holds, or as a box when that font lacked the character.