1.1.21 (17/09/17)
- update (bundled) rack to 1.6.8
- add
Rack::Handler::Servlet::DefaultEnv#get_header(#212)
missing methods to handleActionController::Base#reset_session - can only safely stream natively on ActionDispatch <= 3.2 (#210)
(broken Rails streaming for Rails 4.x) - when handling OPTION calls ignore both 'Date' and 'Allow' headers (#205)