Implement H264Parameters (mainly serialization).
Improve CheckRtpmap a little.
Implement Load logic for h264 fmtp.
Tolerate a= on candidates
Get some more test-cases passing.
We do not actually do telephone-event.
Teach JsepSession to handle h264 parameters.
Merge pull request #128 from docfaraday/h264_fmtp

H264 fmtp