* fix: use a 'static lifetime for the web backend's `Event` types
* implement hidpi for stdweb (web-sys wip?)
* fix: make all canvas resizes go through backend::set_canvas_size
* update Window docs for web, make `inner/outer_position` return the position in the viewport
* X11: Sync key press/release with window focus
* When a window loses focus, key release events are issued for all pressed keys
* When a window gains focus, key press events are issued for all pressed keys
* Adds `is_synthetic` field to `WindowEvent` variant `KeyboardInput`
to indicate that these events are synthetic.
* Adds `is_synthetic: false` to `WindowEvent::KeyboardInput` events issued
on all other platforms
* Clarify code with comments
Adds fullscreen using native web APIs to the stdweb and web-sys backends.
Due to limitations of browser APIs, requests for fullscreen can only be fulfilled during a short-lived user-triggered event. This commit does automatically handle that under the hood, but it does introduce unavoidable latency in full-screening the canvas.
* Use actual numeric IDs to differentiate Windows
This is generally important to identifying which window should
recieve which event, but is also specifically crucial for fixing
RedrawRequested on web.
* Cargo fmt