Update java changelog

Still got bugs to fix, but this will save some time in the
long run.

Author: shs96c

java/CHANGELOG

@@ -1,3 +1,19 @@
+v3.0.0-beta4
+============
+
+* Remove OSS safaridriver in preference for Apple's own SafariDriver
+  that ships as part of Safari 10.
+* [Grid] Cleanup the api for RegistraionRequest -- will break
+  compilation for people moving from 2.x -- removed the ability to
+  change the GridNodeConfiguration reference via the
+  RegistrationRequest object and removed all other setters
+* Include the selenium version in exceptions (again).
+* [HTML suite runner] Better flag compatibility with the 2.x
+  selenium-server-standalone.
+* Fix #2727, combine -jettyThreads and -jettyMaxThreads (#2735)
+* [atoms] Cleaning up getAttribute dependencies, reducing size from
+  36K to 7K
+
 v3.0.0-beta3
 ============