rtc-v0.8.0

Breaking changes from rtc-v0.7.0

• rtc.VideoFrame constructor changed

What's Changed

• pin versions for protocol by @keepingitneil in #141
• relax version pinning for protobuf by @keepingitneil in #142
• improvements to VideoFrame and publish_track APIs by @davidzhao in #144
• chatManager to manage sending/receiving of chat messages by @davidzhao in #143
• raise exception when ffi_client.request returns INVALID_HANDLE by @theomonnom in #145

Full Changelog: rtc-v0.7.1...rtc-v0.8.0