Updated ChangeLog.md

Author: Edward Smith

ChangeLog.md

@@ -1,13 +1,15 @@
 Branch iOS SDK Change Log
 
 - v0.12.30
+  * Fixed some rare app crashes in BranchOpenRequest due to a race condition.
   * Prevent a crash by making a deep copy of dictionary before merging entries. (#573)
   * Removed NSLog statements added for debugging. (#572)
   * Content Discovery Updates (#571)
     - Adding referred link from response.
       Adding referred link from response in case available.
       Support non-app links click with content discovery.
     - Fixed unnecessary "-" char appended to the CD keys.
+    - Fixed a race condition that caused a rare app crash.
 
 - v0.12.29
   * > Beta Release <