Build 51

Linux x86_64 release of Marker (egui + MuPDF).

Commit: 7303b08d48b2faa5f434c2b92e41ea550eb633f8

Runtime shared libraries typically needed on the host:
fontconfig, freetype, brotli, jbig2dec, lcms2, libjpeg, openjpeg2, zlib.

License: MIT.

What's Changed

• Math autopair and tab-out (LT4) by @danielschafi in #75
• LT6: Sharp math at high zoom, LaTeX error text by @danielschafi in #76

Full Changelog: build-49...build-51