Policies, config reload, more stability

• Maturing Fake-TLS
• Connection policies
• Configuration reload without downtime
• Better handle telegram servers disconnects
• Added option to close connections with RST
• More tests and benchmarks

Fake-TLS, IPv6, codecs refactoring

• Fake-TLS protocol implemented
• Codecs were refactored
• IPv6: proxy can accept client connections by IPv6
• More tests

0.5.0

• Multiplexing in master
• Replay attack protection
• Common tests
• Property-based tests