3.0.0: MSP2 support

• Multiwii Serial Protocol Version 2 support (kudos to @humanoid2050)
• single message base class with encode and decode methods
• rudimentary support for different message definitions for the same ID
• removal of old synchronous API (class MSP)
• auto code formatting via clang-format

2.2.0

• fix build issues on Windows (thanks @spacehamster )
• prevent crash when destructing PeriodicTimer
• prevent blocking at Client::stop() (thanks @spacehamster )
• lambda callbacks

2.0.0: update FlightController API

• update fcu::FlightController API
• msp::MSP is deprecated