Uses custom JuliaMono monospace font for displaying unicode code.
Must compile with xelatex (TeX Live 2023 for 12+6 pages) or lualatex.

Latexdiff
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- Place abstract between \begin{document} and \maketitle (temporarily!) and use --append-textcmd=abstract to mark changes in the abstract.
- Replace \begin{tikzpicture} ... \end{tikzpicture} with old version, as latexdiff messes up everything inside.
- Handle unicode character β
- Replace \begin{codebox} ... \end{codebox} contents that are messed up by latexdiff
