Bump to 1.4.0

CHANGES

+# 1.4.0
+
+ * Add check for user input in link_to href parameter
+ * Match ERB processing to rails_xss plugin when plugin used
+ * Add Brakeman::Report#to_json, Brakeman::Warning#to_json
+ * Warnings below minimum confidence are dropped completely
+ * Brakeman.run always returns a Tracker
+
 # 1.3.0
 
  * Add file paths to HTML report

lib/brakeman/version.rb

 module Brakeman
-  Version = "1.3.0"
+  Version = "1.4.0"
 end