Make it clear which changes are breaking changes

ndmitchell · ndmitchell · commit dda7bafb0aae · 2018-02-07T20:50:23.000Z
diff --git a/CHANGES.txt b/CHANGES.txt
@@ -1,7 +1,7 @@
-Changelog for HLint
+Changelog for HLint (* = breaking change)
 
+*   #433, make ideas span multiple modules/declarations
     #433, allow ignoring statement-level duplication hint
-    #433, make hints spanning multiple modules/declarations
     #439, add more fixities for new base operators
     #437, --json output should be finite
     #425, avoid misparsing use of Gtk2Hs `on` function
