Crashlytics CHANGELOG 4.0.0-beta.4 (#4789)

Crashlytics/CHANGELOG.md

@@ -1,3 +1,9 @@
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+# v4.0.0-beta.4
+
+- [fixed] Fixed symbol collisions with the legacy Fabric Crashlytics SDK and added a warning not to include both (#4753, #4755)
+- [fixed] Added crash prevention checks (#4661)
+
 # v4.0.0-beta.3
 
 - [fixed] Fixed an import declaration for installing Crashlytics. Previously, the declaration caused a compile error when you installed using CocoaPods with the `generate_multiple_pods_project` flag set to true (#4786)