Sphinxcontrib-html_unescape

Call html.unescape on source files when building docs

This converts named HTML character references: like '>' into '>', and numeric references: like '🔎' into '🔎'

See https://docs.python.org/3/library/html.html#html.unescape and https://html.spec.whatwg.org/multipage/named-characters.html#named-character-references for more information on available sequences