We should also have subscript and be able to toggle between them somehow - not sure on the UI side. Also, I don't know if the browsers detect this in queryCommandState('superscript');
Firefox seems to, but Chrome doesn't. Any thoughts...
Thanks,
Joel

@JoelParke I've already implemented subscript in my fork, just waiting for you to approve this PR.

Yes, webkit browsers doesn't detect queryCommandState('superscript'), as well as queryCommandState('subscript') so on Chrome/Safari we are not able to 'unset' selection, only by using 'clear' option, or toggle between between sub/sup.

I see here 2 options:

1. Create custom workaround for superscript & subscript;
2. Leave it as it is, because <sup> and <sub> support is quite an important issue;

What do you think?
Thx,
Maksym

I will be away for a couple of weeks and then when I get back, I will think about this, but I need to resolve the issues around firefox/chrome differences first.