Bump egui from 0.20.1 to 0.21.0

[dependabot]

Bumps egui from 0.20.1 to 0.21.0.

Release notes

Sourced from egui's releases.

0.21.0 - Deadlock fix and winit update

This is a relatively minor release, but with a major breaking change in the egui API to prevent a rare deadlock.

Full changelog: https://github.com/emilk/egui/blob/master/CHANGELOG.md

Changelog

Sourced from egui's changelog.

0.21.0 - 2023-02-08 - Deadlock fix and style customizability

• ⚠️ BREAKING: egui::Context now use closures for locking (#2625):
  • ctx.input().key_pressed(Key::A) -> ctx.input(|i| i.key_pressed(Key::A))
  • ui.memory().toggle_popup(popup_id) -> ui.memory_mut(|mem| mem.toggle_popup(popup_id))

Added ⭐

• Add Response::drag_started_by and Response::drag_released_by for convenience, similar to dragged and dragged_by (#2507).
• Add PointerState::*_pressed to check if the given button was pressed in this frame (#2507).
• Event::Key now has a repeat field that is set to true if the event was the result of a key-repeat (#2435).
• Add Slider::drag_value_speed, which lets you ask for finer precision when dragging the slider value rather than the actual slider.
• Add Memory::any_popup_open, which returns true if any popup is currently open (#2464).
• Add Plot::clamp_grid to only show grid where there is data (#2480).
• Add ScrollArea::drag_to_scroll if you want to turn off that feature.
• Add Response::on_hover_and_drag_cursor.
• Add Window::default_open (#2539).
• Add ProgressBar::fill if you want to set the fill color manually. (#2618).
• Add Button::rounding to enable round buttons (#2616).
• Add WidgetVisuals::optional_bg_color - set it to Color32::TRANSPARENT to hide button backgrounds (#2621).
• Add Context::screen_rect and Context::set_cursor_icon (#2625).
• You can turn off the vertical line left of indented regions with Visuals::indent_has_left_vline (#2636).
• Add Response.highlight to highlight a widget (#2632).
• Add Separator::grow and Separator::shrink (#2665).
• Add Slider::trailing_fill for trailing color behind the circle like a ProgressBar (#2660).

Changed 🔧

• Improved plot grid appearance (#2412).
• Improved the algorithm for picking the number of decimals to show when hovering values in the Plot.
• Default ComboBox is now controlled with Spacing::combo_width (#2621).
• DragValue and Slider now use the proportional font (#2638).
• ScrollArea is less aggressive about clipping its contents (#2665).
• Updated to be compatible with a major breaking change in AccessKit that drastically reduces memory usage when accessibility is enabled (#2678).
• Improve DragValue behavior (#2649, #2650, #2688, #2638).

Fixed 🐛

• Trigger PointerEvent::Released for drags (#2507).
• Expose TextEdit's multiline flag to AccessKit (#2448).
• Don't render \r (Carriage Return) (#2452).
• The button_padding style option works closer as expected with image+text buttons now (#2510).
• Menus are now moved to fit on the screen.
• Fix Window::pivot causing windows to move around (#2694).

Commits

• ae722ab Release 0.21.0 - Deadlock fix and winit update
• 1384fa3 Publish new web demo
• 83b5b81 Update changelogs with recent additions
• 63fa3ae Update example screenshots
• ebeb788 We no longer use tts, so remove speech-related dependencies (#2698)
• 0fc25c2 Fix: make sure always_on_top is respected on glow again
• 449dd1c cargo update (#2697)
• 636a39c Update glow to 0.12 (#2695)
• be9b5a3 polish glutin upgrade with glutin-winit crate (#2526)
• e8b9e70 Fix Window::pivot causing windows to move around (#2694)
• Additional commits viewable in compare view

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[hannobraun]

This requires manual intervention. See #1549.

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