* Update flay threshold
* The new behaviour of ruby 2.0 seems that protected methods will return false for #respond_to? even if the method can be called directly since the caller is another instance of the same class. Change the library to use a different kind of test on the object, so rather than duck-typing, test that the other object is a Gateway and extract the relation and adapter when possible.
* This is temporary to work-around a bug in ruby-head, where the protected method cannot be used properly with #respond_to?