Purpose

The purpose of this issue is to update the step() function in the BoatState class to calculate relative wind and water velocities.

Description

• Calculate the relative wind and water velocities by subtracting the the boat’s global velocity from the global wind and water velocities.
• Add unit tests for the step() function in the TestBoatState class.

Resources

• Pytest Examples
• UBC Sailbot Python Conventions and Style Guide