* Get rid of isSelected, canvas, canvasZoom, canvasOffsetX and canvasOffsetY on ExcalidrawElement.
* Fix most unit tests. Fix cmd a. Fix alt drag
* Focus on paste
* shift select should include previously selected items
* Fix last test
* Move this.shape out of ExcalidrawElement and into a WeakMap
* Make Undo & Redo and the menu buttons into actions; add undo/redo buttons
* Create variables for the ToolIcon colors
* Darken the menu buttons when they’re active
* Put the more intensive test in `perform`
* Fix & restyle hint viewer
* Add pinch zoom for macOS Safari
* Chrome/Firefox trackpad pinch zoom
* openedMenu → openMenu
* needsShapeEditor.ts → showSelectedShapeActions.ts
* Call showSelectedShapeActions
* Add Hint viewer
- Add hints for arrows and lines
- Add hints for resizing elements
* Swap priority of multi mode and resize mode in Hint Viewer
* Remove dangling locales from public
* Add shortcut to hide hints
* Change hint texts and show resize hint ONLY during resizing
* Remove hints toggling
