Version 0.1.0

This version breaks backward compatibility with ltr559 in favour of rewriting the library from a singleton module to a class for CircuitPython support, or general support for other uses requiring an alternate i2c library.

All calls into i2cdevice have also been rewritten to use the set and get methods which avoid the clunky __getattribute__ overloading. For more detail see - pimoroni/i2cdevice-python#3