#7 subscript and superscript support in card editor

[Gordon Freeman]

Amazing project!

Maybe there is a possibility to support sub- and superscript formating for the card editor. Now I can work-around subscript by using "xx-small" when the regular size of the text is "small". However, for superscript there is no easy work-around. This kind of formatting is needed alot for descriptions in sciences.

Thanks for your attention.