add Jellyfish::ChunkedBody (similar to Sinatra::Stream)
ChunkedBody include Enumerable
simplified test structure, avoiding namespace pollution
ditto
if no block given, we build to_enum
add test_chunked_body.rb from sinatra's streaming_test.rb
default route: //
so that we can pass QUERY_STRING
make inheritance work, we need to dup the arrays inside the hash
partially translated multi_actions tests from sinatra
update CHANGES.md