Support for super and subscript? +1

[Unknow0059]

In this gist one can see that GitHub's implementation of Markdown supports super and subscript through the <sub> and <sup> tags, but these don't seem to do anything in MarkdownLivePreview.

It would also be convenient if there were footnote support. References are already supported so I don't see why not this.

[yoonsjeong]

If anyone wants to help resolve this issue, some testing reveals that minihtml can support super and subscripts with some simple styling:

Non-superscript text. <span style="font-size:.75rem;position:relative;bottom:0.5em">Superscript text.</span>

Non-subscript text. <span style="font-size:.75rem;position:relative;top:0.5em">Subscript text.</span>