*** USPS Shipping ***
2015.01.26 - version 4.1.9
* Fix XML for international Rates

2015.01.26 - version 4.1.8
* International box shape fixes.
* Fix dimensions for priority mail flat rate medium.
* Remove depreciated functions.

2015.01.13 - version 4.1.7
* Fix international value of package.
* Fix GXG rates.

2014.12.02 - version 4.1.6
* Only set container for large packages.

2014.11.27 - version 4.1.5
* Set container to RECTANGULAR for domestic requests for more accurate rates vs the website.

2014.11.04 - version 4.1.4
* Do media mail check when products do not have dimensions.

2014.11.02 - version 4.1.3
* Fix weight based shipping when dealing with multiple split packages.

2014.10.13 - version 4.1.2
* Add additional Large Flat Rate Box
* Update box packer

2014.10.08 - version 4.1.1
* Clarify Flat Rate selections
* Update box packer

2014.09.04 - version 4.1.0
* Updated flat rate box prices.
* Updated for Sep 2014 API changes.
* Note on API: If dimensions (<Length>, <Width>, <Height>, <Girth>) are provided in the request, they will be used to filter out Flat Rate options where the packaging is smaller than the dimensions provided.

2014.07.21 - version 4.0.0
* Added medium tube rates.
* Updated textdomain.
* Refactored main file.
* Refactored rates and boxes into own files.
* New option to handle unpacked items; ignore, fallback cost, abort, or quote.
* Updated box packer to allow custom volumes for boxes.
* Updated box packer to choose suitable items for tubes (if defined).
* Updated box packer to better deal with flexible packets.
* Added international padded flat rate envelope.

2014.06.03 - version 3.7.5
* Prevent autoloading of transients by setting expirey.
* Allow transients to be used for all requests. Caused live mode to fail on certain queries.

2014.05.29 - version 3.7.4
* Added missing box name when adding box.
* Make first class filters run for weight based shipping too.

2014.05.15 - version 3.7.3
* Added filters to disable first class rates

2014.05.14 - version 3.7.2
* Tweak sizes used in checks

2014.05.12 - version 3.7.1
* Fix rate skipping checks
* Add box name for easier debugging

2014.05.01 - version 3.7.0
* Handle first-class and regional rate size restrictions due to API limitations

2014.04.24 - version 3.6.3
* Added First-Class Mail&#0174; Metered Letter
* Filter flat rate boxes

2014.03.28 - version 3.6.2
* Fix dimension check in weight_based_shipping

2014.01.16 - version 3.6.1
* Fix commercialflag for international shipping requests

2014.01.02 - version 3.6.0
* MX max weight increased to 70lbs
* Updated rates for 2014
* WC 2.1 compatibility
* Changed the way transients store data

2013.11.13 - version 3.5.1
* Force media mail to array

2013.10.29 - version 3.5.0
* Option to limit media mail to specific shipping classes

2013.09.13 - version 3.4.0
* Option to add fees to flat rate boxes
* Re-organized settings
* Fixed notices

2013.09.13 - version 3.3.2
* Fixed lbs conversion
* Include un-translated country names

2013.09.13 - version 3.3.1
* Version bump for beta testers.

2013.09.05 - version 3.3.0
* Weight based shipping option for small packages
* Added online rates for flat rate boxes
* Added priority mail express international flat rate boxes
* Rather than abort on missing dimensions, use '1' for each dimension/weight.

2013.08.22 - version 3.2.6
* Express mail is now priority mail express

2013.08.12 - version 3.2.5
* Prevented case where domestic rate names showed up for international orders.
* Added letter option to box packing to get envelope rates.

2013.08.09 - version 3.2.4
* renamed international 'flats' to Large Envelope.

2013.08.04 - version 3.2.3
* Choose between online and offline rates in admin

2013.07.23 - version 3.2.2
* Ensure code is set when getting quotes
* Fix first-class domestic rates

2013.07.14 - version 3.2.1
* Set debug default to no

2013.06.22 - version 3.2.0
* Switched to ONLINE rates
* Added Regional Rate Boxes
* Similar rates are merged + new UI for services

2013.06.21 - version 3.1.11
* Improved error handling for API downtime

2013.05.13 - version 3.1.10
* Change service names for flat rate boxes

2013.05.13 - version 3.1.9
* Added other d0 rates
* Quote 1 day in future.

2013.05.13 - version 3.1.8
* Truncate zip to 5 chars

2013.04.12 - version 3.1.7
* Flat rate priority/express optional.

2013.02.26 - version 3.1.6
* Updated USPS flat rates to new costs.

2013.02.01 - version 3.1.5
* Rename flat rate boxes

2013.02.01 - version 3.1.4
* Republic of Ireland workaround

2013.01.30 - version 3.1.3
* Show priority flat rate before express flat rate
* Parcel Post -> Standard Post

2013.01.30 - version 3.1.2
* Added flat rate medium box
* Saved the world from rogue d55 flat rate box

2013.01.29 - version 3.1.1
* Fix virtual item detection

2013.01.29 - version 3.1.0
* Broke flat rate boxes into 2 groups - express and priority. This offers 2 rates instead of one.

2012.12.04 - version 3.0.0
* Complete rewrite using USPS's latest API's
