Save more dust statistics

• Save dust raw counts, variance, min and max
• save sleep-score in timeline view

Device Data Improvements

• add ambient light variance and peakiness
• return floats for device data
• convert morpheus dust raw value to dust density

Partner Motion in Timeline

suripu-0.1.83

[maven-release-plugin]  copy for tag suripu-0.1.83

suripu-0.1.77

0.1.77

• add random insights to the timeline