failing test for sse header setting
inside block doesn't really make sense
add headers param to eventsource route builder
Merge pull request #6 from kenichi/sse_headers

Can't set CORS headers for eventsource responses
DELETE and OPTIONS requests should see query string params

The tests have to pass the params as a string rather than a hash
because httpclient has a similar bug.

https://github.com/nahi/httpclient/issues/136
handle errors in before blocks for sse routes
Merge pull request #8 from chewi/delete_options_params

DELETE and OPTIONS requests should see query string params
move filter tests to own spec file
refactor before/after -> filters
mucho testing for filters
mustermann based filters
upgrade mustermann and fix test (thanks @rkh)