[rb] update changelog for RC2
-4.0.0.rc2 (Unreleased)
+4.0.0.rc2 (2021-09-30)
=========================
DevTools:
@@ -22,9 +22,11 @@ Chromium:
* Implemented casting functionality
* Implemented ability to launch chromium app
* Implemented support for specifying permissions
+ * Added support for Chrome-specific Android functionality with #enable_android
Firefox:
* Implemented context functionality
+ * Added support for Firefox-specific Android functionality with #enable_android
Remote:
* Added support for file detector to install Firefox addons from client machine
