LiveWindow.updateValues() is now called from IterativeRobotBase on every
loop iteration. Telemetry for all WPILib classes is enabled by default;
it can be disabled for specific classes using LiveWindow.disableTelemetry(),
or all telemetry can be disabled using LiveWindow.disableAllTelemetry().
This necessitated changing the hook methodology into other classes to
be more property-based rather than each class providing multiple functions.
This had the benefit of reducing boilerplate and increasing consistency.
- Remove NamedSendable, add name to Sendable.
- Provide SendableBase abstract class.
- Deprecate LiveWindow addSensor/addActuator interfaces.
- Add LiveWindow support to drive classes.
- Add addChild() helper functions to Subsystem.
- Fix inheritance hierarchy. Now only sensors inherit from SensorBase.
Other devices inherit from some combination of SendableBase, ErrorBase, or
nothing.
This provides a way to stop motor operation even if the DIO is disconnected.
Also change Set() to enable the PWM instead of having the constructor do it.
Provide an explicit Enable() call to re-enable after Disable() is called.
This is different from the other motor controllers (which automatically
re-enable when Set() is called) due to the dual-wiring of this motor
controller.
Motor safety results in disabling the motor only until the next Set() call.
