v8.0.0

breaking changes:

• remove legacy edge + rtcpeerconnection-shim (see #1076)
• RTCIceCandidate polyfill is now polyfilled according to spec (see #999)

This also exposes the sdp package as adapter.sdp for convenience. Don't use adapter.sdp in production, require sdp directly

Changes: v7.7.1...v8.0.0