Update eframe requirement from 0.15.0 to 0.21.3

[dependabot]

Updates the requirements on eframe to permit the latest version.

Changelog

Sourced from eframe's changelog.

egui changelog

All notable changes to the egui crate will be documented in this file.

NOTE: epaint, eframe, egui-winit, egui_glium, egui_glow and egui-wgpu have their own changelogs!

Unreleased

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).

... (truncated)

Commits

• 7215fdf Release eframe 0.21.3 - fix web input of the the letter P
• e2778d9 eframe: Fix inputting of the letter P on web (#2740)
• 38849fe Release eframe 0.21.2 - support --no-default-features
• df7e5bd Allow compiling eframe with --no-default-features (#2728)
• 97756bc Add badges to all crates' README.md
• f71d79a Release egui-winit, eframe 0.21.1 - fix crash on monitor size/dpi change
• 95247da Fix window position assertion caused by negative window size (#2722)
• 530e9f6 format: add some blank lines where it was needed
• ae722ab Release 0.21.0 - Deadlock fix and winit update
• 83b5b81 Update changelogs with recent additions
• Additional commits viewable in compare view

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