CHANGELOG.md in govuk_ab_testing-1.0.3 vs CHANGELOG.md in govuk_ab_testing-1.0.4

@@ -1,4 +1,8 @@
+## 1.0.4
+
+* Port the individual set-up and assertion steps from Minitest to RSpec
+
 ## 1.0.3
 
 * Add more Minitest helpers with more fine-grained assertions
 
 ## 1.0.2