The initial media query that's used to watch for device pixel ratio
changes should match. Unfortunately it doesn't with Safari and the
corresponding assertion fails. This is because resolution is not a
supported support property for queries. As a workaround, this patch
extends the query to optionally match for the webkit specific DPR
property directly.
This fixes#1734
* web-sys: Impl. event listeners removal for canvas
* web-sys: Impl. media query listeners cleanup
* web: Emit WindowEvent::Destroyed after Window is dropped
* web-sys: Fix unload event closure being dropped early
* web: Impl. cleanup on ControlFlow::Exit
- Drops the Runner, which causes the event handler closure to be
dropped.
- (web-sys only:) Remove event listeners from DOM.
* web: Do not remove canvas from DOM when dropping Window
The canvas was inserted by the user, so it should be up to the user
whether the canvas should be removed.
* Update changelog
* Change web backend `event_handler` to without 'static lifetime
* Refactor web runner and fix ControlFlow::Exit not being sticky
* Impl. scaling change event for web-sys backend
* Improve `dpi` docs regarding the web backend
* Add changes to changelog
* Update features.md
