Openflexure Microscope V7.0.0-beta1 released

Another bug and bugfix for V7.0.0-Beta1:

Nano-Workaround LED power:
As noted in the Forum thread Questions on Mounting Nano Conversion Plate, it is not possible to connect the LED to the power pins on the Pi when using the nano converter plate in the motor electronics workaround.
SOLUTION: Power the LED from the 5V and GND pins of the Arduino Nano.