url_test is in an infinite loop when you try to do a 'get'. Can't see why yet.
Halfway through testing /(a:)/(b:) etc. routes - it seems to take forever if the route goes all the way up to  y:
Showed that optional parameters make it too slow. See http://rodmclaughlin.com/inaccurate-criticism-of-my--routesfordummies--gem.