* Remove width/height from the ".excalidraw" container so it will sized automatically.
* updated all ref calculation to ".excalidraw" instead of parent since now ".excalidraw" will get resized
* Remove props width/height as its not needed anymore.
* Resize handler is also not needed anymore.
* Position absolute canvas due to #3379 (comment)
* move css to style and remove one extra rerendering
* factor out mock logic for test
* set height, width so as to avoid unnecessary updates of regression snap
* better mock
* better type checking and omit width,height from getDefaultAppState and also restore
* revert
* default to window dimensions in constructor
* update docs
* update
* update
* tweaks
* feat: Expose the API to calculate offsets and remove offsetTop and offsetLeft props
* update
* fix tests
* fix
* update readme and changelog
* fix
* better
* feat: Add support for scrollToCenter in initialData so host can control whether to scroll to center on mount
* fix
* update changelog and readme
* fix
* Scroll to center only for collab and shareable links in excalidraw app
* fix test
* update readme
* Update src/packages/excalidraw/README.md
