Display issues - HTML to Markdown

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• Images
• Subscripts/superscripts
• ol and ul
• Tables

Images

eg. https://www.kcl.ac.uk/mathsschool/weekly-maths-challenge/previouschallenges.aspx Challenge 18

Subscripts/superscripts

For example, x squared would simply be displayed as x2
Unicode superscript characters:
⁰¹²³⁴⁵⁶⁷⁸⁹
Unicode subscript characters:
₀₁₂₃₄₅₆₇₈₉

https://en.wikipedia.org/wiki/Superscripts_and_Subscripts
https://www.fileformat.info/info/unicode/block/superscripts_and_subscripts/list.htm

Could check to see if subscript/superscript character exists in Unicode, rather than manually checking for certain ones. This would allow characters like +⁺₊ to be added without manually filtering, useful for recursive relations or indices problems. Kings Maths School website seems to use <sup> and <sub> currently.

Some flavours of markdown (though not necessarily Discord, and seemingly not GitHub) seem to support superscript with ^ and subscript with ~. eg. x^2 and x~1

ol and ul

eg. https://www.kcl.ac.uk/mathsschool/weekly-maths-challenge/challenges-81-100.aspx Challenge 81. Because the list elements are children, the code does not catch them. (since it uses .next_sibling and .contents)

Tables

eg. https://www.kcl.ac.uk/mathsschool/weekly-maths-challenge/previouschallenges.aspx Challenge 5

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A general HTML -> Markdown solution would be helpful; something like this might be helpful https://pypi.org/project/pypandoc/.