Angstrom symbol (\AA) does not render in MathJax

Created by: eteq

It appears the Angstrom symbol is not rendering in MathJax, despite being quite common in LaTeX packages, and has a unicode character (U+212B , normalized to U+00C5 ). Can this be added? It's used in a variety of physical sciences.

See astropy/astropy#2286 ipython/ipython#5533 for the original trigger/use-case for this.