Release v4.0.0

Breaking changes:

• Location verification using device.verifyLocation() now returns a VerificationResult
  containing fields for matchRate, lastLocationTime and resultType

Version 3.1.0

Changes:

• Radius information has been added to device.location() output
• QoD Sessions can now be extended with session.extendSession() method
• Docstrings have been updated across the board

Version 3.0.0

Breaking changes:

• device.createQodSession() now requires duration as a mandatory parameter
• device.getCongestion() now returns a list of Congestion objects

Changes:

• device.verifyLocation() may now return a "PARTIAL" result if the device is
  partially inside the verification area

Fixes:

• Previously due to a miscommunication device.sessions() would return all
  created sessions. These have now been correctly limited to device-specific ones