* Fix scale nudging for multiple selection
* Use message discriminant for filtering where possible
* Remove unnecessary parameter from `selected_bounds_document_space`
* Fix the error `target.closest is not a function`
* Minor cleanup
---------
Co-authored-by: Keavon Chambers <keavon@keavon.com>
* Add code to shift viewport if mouse is beyond edge
* Allow shifting viewport if mouse is stationary too
* Group all modifier keys into SelectToolPointerKeys
* Cleanup message ordering to remove shifting during resize
* Slow down shifting by half
* Clamp speed; code review cleanup
---------
Co-authored-by: 0hypercube <0hypercube@gmail.com>
Co-authored-by: Keavon Chambers <keavon@keavon.com>
