Async reader now explicitly returns the correct value. I should really look into elevating warnings as errors with this build system.
I got rid of the magic numbers in the receiver class.

I began adding the interaction between receiver and copter. I convert the roll and pitch info retrieved by the retriever class to degrees so that it can be used by the copter class.
Made it so that the Copter and PiController classes can now compile. The logic in both should be mostly sound but needs to undergo testing.