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## Rails 4.0.0 (unreleased) ##
+* Rails now raise an exception when you're trying to run a migration that has an invalid
+ file name. Only lower case letters, numbers, and '_' are allowed in migration's file name.
+ Please see #7419 for more details.
+
+ *Jan Bernacki*
+
* Fix bug when call `store_accessor` multiple times.
Fixes #7532.