add tiptap's subscript and superscript extansion to tiptap wysiwyg#2732

tommycornilleau wants to merge 3 commits intoarea17:3.xarea17/twill:3.xfrom

tommycornilleau:feat/add-wysiwyg-tiptap-subscript-supercripttommycornilleau/twill:feat/add-wysiwyg-tiptap-subscript-supercriptCopy head branch name to clipboard