This PR implements more unit tests.
Specifically it implements the following:
Copy constructors for the LinearSystem/MeasurementModel classes.
Convenience functions to get the system, input, measurement and noise mappings of the Linear*Models.
New and extended unit tests for the System/MeasurementModelBase, LinearizedSystem/MeasurementModel, LinearSystem/MeasurementModel and ExtendedKalmanFilter classes.
This PR implements more unit tests. Specifically it implements the following:
LinearSystem/MeasurementModelclasses.Linear*Models.System/MeasurementModelBase,LinearizedSystem/MeasurementModel,LinearSystem/MeasurementModelandExtendedKalmanFilterclasses.