The plugin also works with Github formatted footnotes from remarkgfm and automatically merges user content with citations.1
Here's an example in Chicago fullnote style:
There's no guarantee it works with other footnote formats since it searches for specific ids and hrefs added by GFM ↩
John Nash, “Equilibrium Points in N-Person Games,” Proceedings of the National Academy of Sciences 36, no. 1 (1950): iv, vi–xi, (xv)-(xvii).↩
see John Nash, “Equilibrium Points in N-Person Games,” Proceedings of the National Academy of Sciences 36, no. 1 (1950): 48–49; John Nash, “Non-Cooperative Games,” Annals of Mathematics, 1951, 286–95.↩