called getTempinC()
added getTempinF()
added write()
removed return_callback
Merge branch 'spi' of https://github.com/rseetham/PyBBIO into experimental
webcam library
use falling edge interrupts
Sparkfun's IoT library
Merge branch 'spi' of https://github.com/rseetham/PyBBIO into experimental
Don't merge the webcam library yet

This reverts commit bf000bc89180bf8410ec2237f3dff9951c386c05.