New minor features
- allow again slashes in paths (#66)
- allow onInitCmd only if path is not 'all'
- allow onDemandCmd when path is 'all'
Fixes and improvements
- improve performance by avoiding copy() (#21)
- send TEARDOWN to a source when its connection closes (#63)
- fix error 401 by sorting keys of authorization header correctly (#69)
- fix crash when udp is disabled (#69)
- add Accept header to DESCRIBE requests
- fix possible deadlock when communicating with clients