Merge branch 'release/2.6.0.1'
Merge branch 'release/3.0.1.0'
Merge pull request #57 from tarunbhardwaj/develop

Explicitly specify weight_uom for rates weight calculation
Release version 3.2.1.0
Merge branch 'release/3.2.1.0'
Merge branch 'release/3.2.1.0' into develop
Packaging fixes

* Add README and Manifest
Merge branch 'release/3.2.1.1'
Add new mailclass `First Class Package International Service`

* compare mailclass from code