Merge pull request #151 from cwjohnston/release/v1.4.2

Release version 1.4.2

v1.4.1: Merge pull request #150 from sensu-plugins/release/1.4.1

Release 1.4.1

1.4.0

Merge pull request #146 from cwjohnston/release/v1.4.0

Release version 1.4.0