Pion issues related to Galène

[jech]

• Slow ICE failures Only switch to failed after all candidates are exhausted? pion/ice#271
• ICE Agent can not be restarted when gathering ICE Agent can not be restarted when gathering pion/ice#280
• Issues with TCP ICE Issues with TCP ICE pion/webrtc#1356 and Continued TCP-ICE Improvements pion/ice#245
• Issues with UDPMux UDPMux causes massive packet loss pion/ice#518 (see also Share one UDP socket with all UDP candidates pion/ice#76)
• Pion chooses the wrong remote interface Wrong remote candidate is selected pion/ice#305
• Writes are where we spend most CPU time Reduce candidateBase.writeTo CPU cost pion/ice#128
• We're allocating encryption contexts like crazy Optimise away calls to cipher.NewCTR pion/srtp#76 and crypto/cipher: NewCTR is too expensive for small runs golang/go#39365
• We're allocating too many buffers Avoid growbuffer, take two pion/srtp#197
• The WebM files written to disk are incorrect Files not seekable at-wat/ebml-go#134
• The TURN timeout is fixed at 2s https://github.com/pion/webrtc/issues/1635
• The built-in TURN server is too verbose Large numbers of errors in log pion/turn#197
• Infinite loop on failed negotation Infinite loop in CreateOffer pion/webrtc#1656
• Unable to use separate SSRCs for RTX and RED Unable to handle NACK that uses distinct SSRC pion/webrtc#1675
• Stream ids get lost somewhere Empty ID and StreamID when simulcasting pion/webrtc#1808
• Race in Pion code race when simulcast pion/webrtc#1803
• Fix crash in samplebuilder.PopWithTimestamp Avoid crash in samplebuilder.PopWithTimestamp pion/webrtc#1838
• Fix crash when a PC callback is reset Fix crash when a PC callback is reset pion/webrtc#1872
• Samplebuilder is broken in v3.0.31 Samplebuilder is broken in v3.0.29 pion/webrtc#1839
• The AV1 parser is inefficient remove av1 obu parsing pion/rtp#265 make av1 obu parsing optional pion/rtp#266