name it sup(erclass) instead of par(ent)
more fix to inheritance and add test cases for it
demonstrate how to re-dispatch
Rack::Builder wants SCRIPT_NAME
the rest of tests in test_routing.rb are done
they are quite outdated
add best_handler finder, finding most suitable handler and cache it
remember failed lookup
CHANGES.md: document the new behaviour
finally the complete tests from Sinatra's mapped_error_test.rb