Added screenshots and videos

packages/react-devtools/CHANGELOG.md

@@ -24,13 +24,10 @@
 
 #### Features
 * Improve Profiler commit-selector UX ([bvaughn](https://github.com/bvaughn) in [#20943](https://github.com/facebook/react/pull/20943))
-![Video demonstrating tooltip with commit duration and time](https://user-images.githubusercontent.com/29597/110225725-30a1f480-7eb6-11eb-9825-4c762ffde0bb.gif)
 * Swap `log` with `cbrt` for commit bar height ([bvaughn](https://github.com/bvaughn) in [#20952](https://github.com/facebook/react/pull/20952))
 * Integrate with new experimental React Suspense features to improve props loading and inspection UX ([bvaughn](https://github.com/bvaughn) in [#20548](https://github.com/facebook/react/pull/20548), [#20789](https://github.com/facebook/react/pull/20789), [#20458](https://github.com/facebook/react/pull/20458))
 * Expose DEV-mode warnings in devtools UI ([eps1lon](https://github.com/eps1lon) in [#20463](https://github.com/facebook/react/pull/20463))
-![inline-errors-mvp](https://user-images.githubusercontent.com/12292047/102142226-5775ff00-3e62-11eb-99c1-7022169c7240.gif)
 * Display shortcuts for prev/next search result ([eps1lon](https://github.com/eps1lon) in [#20470](https://github.com/facebook/react/pull/20470))
-![devtools-searchinput-kbd](https://user-images.githubusercontent.com/12292047/102255393-55677b00-3f0a-11eb-8aa1-9d1d87008770.gif)
 * Increase the clickable area of the prop value ([TryingToImprove](https://github.com/TryingToImprove) in [#20428](https://github.com/facebook/react/pull/20428))
 
 #### Experimental features
@@ -39,6 +36,25 @@ The following features are only enabled when used with (experimental) builds of
 * Add commit and post-commit durations to Profiler UI ([bvaughn](https://github.com/bvaughn) in [#20984](https://github.com/facebook/react/pull/20984), [#21183](https://github.com/facebook/react/pull/21183))
 * Show which hooks (indices) changed when profiling ([bvaughn](https://github.com/bvaughn) in [#20998](https://github.com/facebook/react/pull/20998))
 
+###### Improve Profiler commit-selector UX
+
+![Video demonstrating tooltip with commit duration and time](https://user-images.githubusercontent.com/29597/110225725-30a1f480-7eb6-11eb-9825-4c762ffde0bb.gif)
+
+![Graphic illustrating Profiler bar heights using different scales](https://user-images.githubusercontent.com/29597/110361997-bafd6c00-800e-11eb-92d8-d411e6c79d84.png)
+
+###### Expose DEV-mode warnings in devtools UI
+![Inline warnings and errors](https://user-images.githubusercontent.com/29597/114225729-adeed800-9940-11eb-8df2-34d8b0ead3b8.png)
+
+###### Shows which fibers scheduled the current update
+![Shows which fibers scheduled the current update](https://user-images.githubusercontent.com/29597/114225931-eee6ec80-9940-11eb-90cc-fe6630fbfc08.gif)
+
+###### Add commit and post-commit durations to Profiler UI
+![Add commit and post-commit durations to Profiler UI](https://user-images.githubusercontent.com/29597/114225991-00c88f80-9941-11eb-84df-e2af04ecef1c.gif)
+
+###### Show which hooks (indices) changed when profiling
+![Show which hooks (indices) changed when profiling](https://user-images.githubusercontent.com/29597/114225838-d37be180-9940-11eb-93f8-93e0115421c8.png)
+
+
 ## 4.10.1 (November 12, 2020)
 #### Bugfix
 * Fixed invalid internal work tag mappings ([bvaughn](https://github.com/bvaughn) in [#20362](https://github.com/facebook/react/pull/20362))