Updated change log

CHANGELOG.md

@@ -53,6 +53,7 @@
     Bug #4475: Scripted animations should not cause movement
     Bug #4479: "Game" category on Advanced page is getting too long
     Bug #4480: Segfalt in QuickKeysMenu when item no longer in inventory
+    Bug #2606: Implemented (optional) case sensitive global search
     Feature #3276: Editor: Search- Show number of (remaining) search results and indicate a search without any results
     Feature #4222: 360° screenshots
     Feature #4256: Implement ToggleBorders (TB) console command