Performance tuning

[awr]

The library needs to be tuned from a performance point of view, especially wrt sending and receiving messages at high volume.

There is likely some low hanging fruit if profiled. It would also be good to benchmark against a couple other c# libraries, at least for the simple scenarios.

[awr]

Consider using something like https://www.nuget.org/packages/Crc32C.NET/ to speed up the CRC check (especially for the latest version of the message protocol, which takes advantage of the assembly instructions available to do the crc)