Footnote insertion enhancements

[Enrique]

I want to see a toolbar entry to help inserting footnotes. For example, insert the new footnote and immediately the footnote contents. The footnote number could be assigned automatically too.

Syntax example

This line contains a footnote [^1]:´This is the text of the footnote´

[evanw]

Thanks for the feedback, I'll see what I can do for a future release.