Add more tests

[murkle]

A nice collection of (mostly) real world test cases:
latexTests2.txt

Some of them use \cellcolor{}, see #25

[sylvestre]

Thanks for sharing.
Would you be willing to write a pull request? This will probably improve the code coverage.

[murkle]

Sorry, no - I don't have a compatible dev environment set up

[sylvestre]

It is pretty easy to set up ;)

[murkle]

\raisebox{0pt}[0pt][0pt]{\Large \textbf{Aaaa\raisebox{-0.3ex}{a} \raisebox{-0.7ex}{aa} \raisebox{-1.2ex}{r} \raisebox{-2.2ex}{g} \raisebox{-4.5ex}{h}}}
\tfrac{3}{5}

[murkle]

More examples https://github.com/Khan/math_audit/blob/master/maths.json