Added support of U.S. possessions like Puerto Rico, Guam, etc.
Special processing of U.S. possessions is actual only for USPS
Add Commercial Base rate support

Fixes #60
first group of changes for USPS tracking

Start of adding USPS tracking capability

* Currently using FedEx sample doc; needs replaced
* Unit only - not remote yet

passing unit tests for USPS tracking

add USPS timestamp tracking info

further development of USPS tracking

USPS tracking response working

To-do: parse tracking events for location, datetime, message

Cleanup, additional testing, parsing of more USPS data

Handle package not found in the test environment

general cleanup prior to pull request

more general cleanup prior to pull request

further cleanup prior to pull request

Address date-format unit test failure in 1.8.7

Add carrier name to USPS tracking response
Merge pull request #91 from ROFISH/master

Add Commercial Base Rate Support
Lol ruby 1.8.7. Let's see how broken we are with 2.0 instead
Gets tests passing
Merge branch 'pullrequests/usps_tracking'
Fixes link to travis-ci
Gracefully handles cases where destination could be nil
Add shipping date to Canada Post
Merge pull request #94 from Shopify/bugfix/fedex_destination_node_is_nil

Gracefully handles cases where destination could be nil
Merge pull request #58 from romul/us_possessions

Added support of U.S. possessions like Puerto Rico, Guam, etc. (USPS)
Fix shipping date
Release version 0.10.0
Upgrade to RateRequest v13 API and update request fixtures

* Should update response fixtures as well...
Migrates to minitest and makes FedEx XML parsing failures more useful
Removes useless test and unnecessary begin block
Merge pull request #97 from Shopify/feature/improve_fedex_error_messages

Migrates to minitest and makes FedEx XML parsing failures more useful
Handle deliver info not available usps error