* feat(tree): replace react-arborist with custom tree implementation
* feat(tree): keyboard arrow navigation between rows
* feat(emoji-picker): focus search input on open
* refactor(emoji): switch to @slidoapp/emoji-mart fork for accessibility
* feat(tree): Home/End and typeahead keyboard navigation
* feat(tree): roving tabindex and * to expand sibling subtrees
* feat(tree): Space activation and ARIA refinements
* fix(tree): move treeitem role to focusable row + aria-current
* feat: new image menu
* switch to resizable side handles
* use pixels
* refactor excalidraw and drawio menu
* support image resize undo
* video resize
* callout menu refresh
* refresh table menus
* fix color scheme
* fix: patch @tiptap/core ResizableNodeView to prevent resize sticking after mouseup
* feat: columns
* notes callout
* focus on first column
* capture tab key in column
* fix print
* hide columns menu when some nodes are focused
* fix print
* fix columns
* selective placeholder
* fix blockquote
* quote
* fix callout in columns