Expose featureDescriptor and stepCount

[heavyrubberslave]

Fixes #303

[CLAassistant]

All committers have signed the CLA.

[qdot]

Ehhhhh not quite what I'm going for here. We don't use the StepCount nomenclature anywhere now, because it's not valid anymore. We now use value ranges that can be negative, so the single value no longer fits.

[heavyrubberslave]

Ehhhhh not quite what I'm going for here. We don't use the StepCount nomenclature anywhere now, because it's not valid anymore. We now use value ranges that can be negative, so the single value no longer fits.

Ah, I see. Is it always min/max, so 2 elements, or could it be specific values like [-42, 1, 2, 3, 5]?

[qdot]

Always min/max. See https://buttplug.io/docs/spec/device_information for the definition.

[heavyrubberslave]

@qdot I expose now just the Value property as is.