* Tweak - Show the specific rate label when only offering customers the cheapest rate.
* Fix - Double debug notice in checkout page.
* Tweak - Move Shipping Rates (Commercial|Retail) option out of API rates section.
* Add - Add options to USPS settings for overriding default product dimensions/weights.
* Fix - Add warning for users offering commercial rates with WooCommerce's USPS user ID.
* Fix - Adjusted flat rate envelope heights to match API results.
* Tweak - Output error messages in debug when API response is WP_Error.
Fix - character in box name getting escaped exponentially.
* Fix - PHP Warning when fallback amount not set.
* Fix - Adjust domestic box shipping API request when regional rate box is packed.