- docs: add three examples for changing the document font
font-emoji-noto-color-emoji: renders emojis with Noto Color Emojifont-emoji-openmoji: renders emojis with OpenMojifont-unicode-font-fallback: renders missing glyphs with various Noto fonts
- ci: install luatex for rendering examples with
--pdf-engine lualatex - ci: allow (optional) example document creation with Java
- fix: apply consistent heading colors. Previously, only the first-level heading color (
\section) was changed to#282828(RGB40, 40, 40). Now all the headings (\chapter,\part,\subsubsection, etc.) are changed, even when usingbook: true.