CHANGES.md in watir-6.8.3 vs CHANGES.md in watir-6.8.4

@@ -1,4 +1,8 @@
+### 6.8.4 (2017-09-08)
+
+* Fix bug with non-visible buttons not being waited on (#648)
+
 ### 6.8.3 (2017-09-07)
 
 * Fix bug with non-interactable elements not being waited on (#636)
 
 ### 6.8.2 (2017-09-06)