• Fix Storage Emulator crashing with NoClassDefFoundError in some cases (#3481).
• Refactor mechanism for invoking function triggers (#4886).
• Add support for HTTP_PROXY and HTTPS_PROXY environment variables to crashlytics:mappingfile:upload and crashlytics:symbols:upload commands (#4604).
• Fix Emulators not shutting down / exporting correctly when CLI update available (#4981).
• Adds access-control-allow-private-network=true header to Auth and Storage emulators. Enables accessing at localhost:port when site is exposed via tunnel (#4227).
• Improves detection of in-use ports for Hosting Emulator on macOS (#4628).
• Add Eventarc multi-db triggers support to RTDB Emulator (#5000).