- Pin protobuf version to 2.18.2 to fix compilation: incompatibility of bytes crate
- Fix compilation on Windows
- Upgrade httpbis, tls-api, rustls dependencies
- Upgrade to futures 0.3
- Pinned rust-protobuf to 2.8 and bytes to 0.4 (because bytes 0.5 is incompatible with bytes 0.4).
- Update rust-protobuf to version 2
- Update httpbis to version 0.7