Fix trackingEvents when Wrapper contains a Companion

Version 1.2.2

 - Update vast-client.js to the latest master
 - Bump version numbers to 1.2.2

1.2.1: Merge pull request #43 from michaelvial/WrappedCompanions

Fix #41 : Wrapped companions

Companion ad support

Merge pull request #36 from dharFr/v1.2.0

Version 1.2.0

Merge pull request #28 from dharFr/v1.1.2

 Version 1.1.2

Merge pull request #24 from dharFr/v1.1.1

Version 1.1.1

Merge pull request #22 from dharFr/v1.1.0

Version 1.1.0