~fd/staticmath-server

Remove package-lock.json (use yarn.lock instead please)
Update to KaTeX 0.16.9
Fix CI (again x4)
Fix CI (again, again, again)
Fix CI (again again)
Fix CI (attempt 2)
Attempt automatic container builds
bump katex version
flakes; allow switching to mathml-only mode
Be backward-compatible
Inline and block rendering + better container signaling
I forgot the license
Add docker instructions
Add containerfile
Add server readme