4.0.0 (the Sleep Mode release)

Added

• Added a low power Sleep Mode. Read the useLowPowerSleepModeWhileStationary API
  docs for more details.
• Added ability to disable dynamic desiredAccuracy adjustments. Read the
  dynamicallyAdjustDesiredAccuracy API docs for more details.
• Added LocomotionManager settings for configuring which (if any) Core Motion features to make use of
  whilst recording.

Removed

• startCoreLocation() has been renamed to startRecording() and now starts both Core Location
  and Core Motion recording (depending on your LocomotionManager settings). Additionally,
  stopCoreLocation() has been renamed to stopRecording(), and startCoreMotion() and
  stopCoreMotion() have been removed.
• recordingCoreLocation and recordingCoreMotion have been removed, and replaced by
  recordingState.
• The locomotionSampleUpdated notification no longer includes a userInfo dict.