UNITSOFMEASUREMENT-87: Merge the model package into quantity and root 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-87
Merge branch 'master' of https://github.com/unitsofmeasurement/uom-impl-enum.git
UNITSOFMEASUREMENT-87: Merge the model package into quantity and root 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-87