This Go Sample Source Code is athenahealth's More Disruption Please API samples. The libraries are used to help facilitate access to the API. Each package has a naive implementation of using the API, as well as a library and a testing script to use that library.
Fitbit has released OS Developer Preview 3 which includes the new Power API allowing apps to display device battery charging information, the addition of the brightnessOverride parameter to the Display API, and a permissions requirement. The company also announced the #Made4Fitbit App Challenge.