Release v1.8.3

Release v1.8.2

Release v1.8.1

Release v1.8.0

Release v1.7.1 (and also add missing changelog notes for 1.7.0)

Release v1.7.0

Releasing v1.6.0

Merge pull request arduino-libraries#101 from sandeepmistry/v1.5.0

Version 1.5.0

Version 1.4.0

Version 1.3.0