ReactiveCocoa/ReactiveCocoa — pull request #1493 by jspahrsummers (2014-09-08 13:59:05+00:00)
Title: Use 10% of timer intervals as a default leeway for power efficiency

Recommended in the [Power Efficiency Guide for Mac Apps](https://developer.apple.com/library/mac/documentation/Performance/Conceptual/power_efficiency_guidelines_osx/Timers/Timers.html#//apple_ref/doc/uid/TP40013929-CH5-SW17).