Bug fixes
- Fixes the issue that resulted in the "Cannot read property 'id' of undefined" in iframe scenarios (#643, #645).
- Fixes the issue when making an explicit return in a handler considered the request unhandled in Node.js (#655, #672).
- Fixes the issue that resulted in a multipart form data not being parsed correctly given extra spaces or the lack of such in the
Content-Typeheader (#671).