release(4.0): A series of major updates

[mycrl]

Server

• Add more new configuration items.
• Supports Transport Layer Encryption #100
• Relay ports limited range #136
• Reimplemented TCP and UDP servers.
• Custom MTU.
• External communication has been migrated to gRPC.
• Authentication via external grpc server #137
• Unstable connection only when 1 peer uses a reflexive candidate #130
• MESSAGE-INTEGRITY-SHA256 | USERHASH | PASSWORD-ALGORITHMS | PASSWORD-ALGORITHM

SDK

• supporting communication with the turn server.
• Speed Test.

Testing

• STUN testing.
• TURN testing.
• STUN Fuzz Testing.
• TURN Fuzz Testing.
• STUN Benchmarking.
• TURN Benchmarking.

Package Manager

• apt - https://launchpad.net/turn-server
• homebrew
• vcpkg
• npm