We now have footnotes [1] 
To create a footnote add eg. [^1]to where you want the footnote to be, and then add the footnote text to the bottom of your post (don’t forget the colon). Eg.
[^1]: Footnote text
(Note: it may look a little different in the preview than how it displays in the published post)
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This is a footnote ↩︎