Add changelog intro and reorder stuff

CHANGELOG.md

@@ -15,7 +15,53 @@ Changes since the last release can be found at <https://github.com/emilk/egui/co
 
 
 ## 0.33.0 - 2025-10-09
+Highlights from this release:
+- `egui::Plugin` a improved way to create and access egui plugins
+- [kitdiff](https://github.com/rerun-io/kitdiff), a viewer for egui_kittest image snapshots (and a general image diff tool)
+- better kerning
+
+
+### Improved kerning
+As a step towards using [parley](https://github.com/linebender/parley) for font rendering, @valadaptive has refactored the font loading and rendering code. A result of this (next to the font rendering code being much nicer now) is improved kerning.
+Notice how the c moved away from the k:
+
+![Oct-09-2025 16-21-58](https://github.com/user-attachments/assets/d4a17e87-5e98-40db-a85a-fa77fa77aceb)
+
+
+### `egui::Plugin` trait
+We've added a new trait-based plugin api, meant to replace `Context::on_begin_pass` and `Context::on_end_pass`.
+This makes it a lot easier to handle state in your plugins. Instead of having to write to egui memory it can live right on your plugin struct.
+The trait based api also makes easier to add new hooks that plugins can use. In addition to `on_begin_pass` and `on_end_pass`, the `Plugin` trait now has a `input_hook` and `output_hook` which you can use to inspect / modify the `RawInput` / `FullOutput`.
+
+### kitdiff, a image diff viewer
+At rerun we have a ton of snapshots. Some PRs will change most of them (e.g. [the](https://github.com/rerun-io/rerun/pull/11253/files) [one](https://rerun-io.github.io/kitdiff/?url=https://github.com/rerun-io/rerun/pull/11253/files) that updated egui and introduced the kerning improvements, ~500 snapshots changed!).
+If you really want to look at every changed snapshot it better be as efficient as possible, and the experience on github, fiddeling with the sliders, is kind of frustrating.
+In order to fix this, we've made [kitdiff](https://rerun-io.github.io/kitdiff/).
+You can use it locally via
+- `kitdiff files .` will search for .new.png and .diff.png files
+- `kitdiff git` will compare the current files to the default branch (main/master)
+  Or in the browser via
+- going to https://rerun-io.github.io/kitdiff/ and pasting a PR or github artifact url
+- linking to kitdiff via e.g. a github workflow `https://rerun-io.github.io/kitdiff/?url=<link_to_pr_or_artefact>`
+
+To install kitdiff run `cargo install --git https://github.com/rerun-io/kitdiff`
+
+Here is a video showing the kerning changes in kitdiff ([try it yourself](https://rerun-io.github.io/kitdiff/?url=https://github.com/rerun-io/rerun/pull/11253/files)):
+
+https://github.com/user-attachments/assets/74640af1-09ba-435a-9d0c-2cbeee140c8f
+
+###  Migration guide
+- `egui::Mutex` now has a timeout as a simple deadlock detection
+    - If you use a `egui::Mutex` in some place where it's held for longer than a single frame, you should switch to the std mutex or parking_lot instead (egui mutexes are wrappers around parking lot)
+- `screen_rect` is deprecated
+    - In order to support safe areas, egui now has `viewport_rect` and `content_rect`.
+    - Update all usages of `screen_rect` to `content_rect`, unless you are sure that you want to draw outside the `safe area` (which would mean your Ui may be covered by notches, system ui, etc.)
+
+
 ### ⭐ Added
+* New Plugin trait [#7385](https://github.com/emilk/egui/pull/7385) by [@lucasmerlin](https://github.com/lucasmerlin)
+* Add `Ui::take_available_space()` helper function, which sets the Ui's minimum size to the available space [#7573](https://github.com/emilk/egui/pull/7573) by [@IsseW](https://github.com/IsseW)
+* Add support for the safe area on iOS [#7578](https://github.com/emilk/egui/pull/7578) by [@irh](https://github.com/irh)
 * Add `UiBuilder::global_scope` and `UiBuilder::id` [#7372](https://github.com/emilk/egui/pull/7372) by [@Icekey](https://github.com/Icekey)
 * Add `emath::fast_midpoint` [#7435](https://github.com/emilk/egui/pull/7435) by [@emilk](https://github.com/emilk)
 * Make the `hex_color` macro `const` [#7444](https://github.com/emilk/egui/pull/7444) by [@YgorSouza](https://github.com/YgorSouza)
@@ -23,13 +69,9 @@ Changes since the last release can be found at <https://github.com/emilk/egui/co
 * Add `Memory::move_focus` [#7476](https://github.com/emilk/egui/pull/7476) by [@darkwater](https://github.com/darkwater)
 * Support on hover tooltip that is noninteractable even with interactable content [#5543](https://github.com/emilk/egui/pull/5543) by [@PPakalns](https://github.com/PPakalns)
 * Add rotation gesture support for trackpad sources [#7453](https://github.com/emilk/egui/pull/7453) by [@thatcomputerguy0101](https://github.com/thatcomputerguy0101)
-* New Plugin trait [#7385](https://github.com/emilk/egui/pull/7385) by [@lucasmerlin](https://github.com/lucasmerlin)
-* Add `Ui::take_available_space()` helper function, which sets the Ui's minimum size to the available space [#7573](https://github.com/emilk/egui/pull/7573) by [@IsseW](https://github.com/IsseW)
-* Add support for the safe area on iOS [#7578](https://github.com/emilk/egui/pull/7578) by [@irh](https://github.com/irh)
 
 ### 🔧 Changed
 * Document platform compatibility on `viewport::WindowLevel` and dependents [#7432](https://github.com/emilk/egui/pull/7432) by [@lkdm](https://github.com/lkdm)
-* Update MSRV to 1.86 [#7469](https://github.com/emilk/egui/pull/7469) by [@emilk](https://github.com/emilk)
 * Deprecated `ImageButton` and removed `WidgetType::ImageButton` [#7483](https://github.com/emilk/egui/pull/7483) by [@Stelios-Kourlis](https://github.com/Stelios-Kourlis)
 * More even text kerning [#7431](https://github.com/emilk/egui/pull/7431) by [@valadaptive](https://github.com/valadaptive)
 * Increase default text size from 12.5 to 13.0 [#7521](https://github.com/emilk/egui/pull/7521) by [@emilk](https://github.com/emilk)