As one of the latest KS stretch goals, we need to implement suite of drivers for number of sensors, and it would be nice to come up with a general sensor driver model to follow.

Requirements:

1. A general, baseline interface (userstory: "I have a hundred of sensors, how do I use them in similar manner of any MicroPython port", not: "My project is centered around capabilities of a particular sensor, how do I expose them?")
2. The general requirement is avoiding memory allocations to perform sensor reading
3. One of the biggest contention points is usage of floating-point vs fixed points numbers, and if the latter, then how. Given that floating-point support is optional, and may lead to memory allocation, would be strongly nice to support (allocation-free) fixed point.
4. Should be general enough for any sensor (including sensors which measure several values).
5. There should be balance between efficiency tricks and pythonic ease of use.