Migrations refactored ro support data convertion

db/migrate/20130218141444_remove_merged_from_merge_request.rb

@@ -0,0 +1,9 @@
+class RemoveMergedFromMergeRequest < ActiveRecord::Migration
+  def up
+    remove_column :merge_requests, :merged
+  end
+
+  def down
+    add_column :merge_requests, :merged, :boolean, default: true, null: false
+  end
+end