feat(footnotes): add back-to-reference link for footnotes (#2699)#2738

arshinsikka wants to merge 3 commits intoMarkBind:masterMarkBind/markbind:masterfrom

arshinsikka:feature/2699-add-footnote-back-linkarshinsikka/markbind:feature/2699-add-footnote-back-linkCopy head branch name to clipboard