Add note about possible breaking changes

CHANGELOG.md

@@ -1,4 +1,10 @@
 # Not Released
-
+## Fixed
 - Fix loading of jquery-ui files (Fixes https://github.com/mbulat/plutus/issues/58)
+
+## Added
 - Add `Account#amounts` and `Account#entries` to get all amounts and entries, respectively
+
+## Changed
+- Required jquery-ui version
+- How migrations are done, which may be a breaking change from older versions of Plutus. When upgrading to this version, run `rake plutus:install:migrations`, and ensure that the files that are generated are of migrations you only need. It should not generate new versions if you've installed the latest version before this.