o Add support for parameters without a value, like in RFC3842:
o Add support for parameters without a value, like in RFC3842:

  Contact: <sip:alice@vm13-sj.example.com>
        ;actor="msg-taker";methods="SUBSCRIBE"
        ;automata;events="message-summary"

o protect original order of parameters when generating message.
  Parameters added programmatically will appear in the order they
  have been added in. This could be important for the RFC3842
  comliance;

o extend the setParam() method so that value can be omitted for
  parameters without a value.

synety-jdebp/rtpproxy,dsanders11/rtpproxy,jevonearth/rtpproxy,synety-jdebp/rtpproxy,synety-jdebp/rtpproxy,sippy/rtp_cluster,jevonearth/rtpproxy,dsanders11/rtpproxy,synety-jdebp/rtpproxy,sippy/rtpproxy,dsanders11/rtpproxy,sippy/rtpproxy,jevonearth/rtpproxy,sippy/rtpproxy,jevonearth/rtpproxy,sippy/rtp_cluster