Typst 0.13 Released: Improved Daily UX and Experimental HTML Export

Typst 0.13 focuses on improving the day-to-day user experience, fixing numerous long-standing bugs, and increasing flexibility. Most excitingly, it introduces an experimental HTML export feature. Updates include: semantic paragraph improvements for more flexible paragraph indentation; improved outline styling for better aesthetics and customization; a new `curve` function simplifying Bézier curve drawing; improved file and byte handling with direct raw byte data support; streamlined image generation workflow with uncompressed raw pixel data support; boosted plugin performance with multi-threaded execution; a fix for single-letter string styling in math formulas; added font coverage control for better mixed script typesetting; a new `pdf.embed` function for embedding files into PDFs; and experimental HTML export for semantically rich HTML output from Typst documents.