Footnotes refactor

[hgodinho]

Hello there!

Here is my suggest to support footnotes. Still has limitations in inline footnotes, as mdast is returning a text type and not a footnote type.

I also added a .editorconfig to avoid messing up with your code, as my vscode is configured to use tab_width = 4.

[inokawa]

@hgodinho
Could you update snapshot of test for footnotes?
Thank you for your PR!

[hgodinho]

never used snapshot before, nice discovery!

[hgodinho]

in my machine the problem is in the latex spec, that goes beyond my knowledge =/

[inokawa]

Thanks!

[Fenugreek]

In my .md file, I used the syntax for footnotes [^1] and [^1]: as in the mdast README¹.
Footnotes do not appear in the generated .docx.
I am using version 0.1.6.
Is the syntax incorrect? Where can I look this up? Interestingly, that syntax works here for this comment.
Thanks.

Footnotes

1. https://github.com/syntax-tree/mdast ↩