v6.0.0

Includes all the changes from v6.0.0-rc1 listed below in addition to the following:

• All constants are now defined in the top-level Constants class (com.easypost.Constants)
  • Users who are utilizing the constants for exception message parsing should account for the new namespace
• Added support for creating/registering carrier accounts that require custom workflows (e.g. FedEx, UPS)
• Swapped the parameters for the following functions, making id the first argument
  • Shipment.generateForm()
  • EndShipper.update()
  • CarrierAccount.update()
• Fixed a typo, ServiceUnavailablError is now ServiceUnavailableError
• Fixed a typo: Smartrate is now SmartRate, apikeys is now apiKey, scanform is now scanForm
• Moved validateWebook, findLowestSmartrate, and getLowestSmartRate from Services to Utilities since it does not required an EasyPost client object
• Added a root level APIException class for all HTTP exceptions

Breaking Changes

• Library is now thread-safe
  • Initialize an EasyPostClient object with an API key. Optionally set connection and readtime params
  • All methods (i.e. create, retrieve, all) exist in services, accessed via property of the client (eg: client.shipment.create())
    • E.g. Static method -> Shipment shipment = client.address.create(params)
    • E.g. Instance methods are now static -> Shipment boughtShipment = client.shipment.buy(shipmentID, lowestRate)
  • All functions are now taking object ID instead of an object, which means the functions are returning the response value directly instead of updating the current object
    • E.g. Shipment boughtShipment = client.shipment.buy(shipmentID, lowestRate)
• Improves error exception handling
  • Specific error types for each category of error
  • API error message may be an array rather than a string. Arrays will be concatenated (by comma) and returned as a string.
• Removes createAndVerifyWithCarrier function
• Removes verifyWithCarrier function
• Removes getUpdate and setUpdate from Tracker class
• Removes all beta features and corrsponding unit tests
• Removes serviceCode from Rate class since this value is internal use only
• Removes invalid function User.create() since creating a child-user requires a name
• Removes deprecated class CreditCard and its associated classes PrimaryPaymentMethod, SecondaryPaymentMethod, and BaseCreditCard, please use alternative Billing class
• Removes all the setters of each object
• Removes the refresh() function in all classes, please use retrieve() function instead
• Removes invalid functions that allow users to make an API request without providing required parameters
• Changes the type of Insurance Amount from Float to String
• Changes the type hasMore in ReferralCustomerCollection from boolean to Boolean
• Renames some getters
  • Pickup class: getPickoutRates() -> getPickupRates()
  • PaymentMethod class: getPrimaryPaymentMethodObject() -> getPrimaryPaymentMethod()
  • PaymentMethod class: getSecondaryPaymentMethodObject() -> getSecondaryPaymentMethod()
• Converts return type from a boolean to void when we receive an empty response body from the API
  • fundWallet() and deletePaymentMethod() in Billing class
  • createList() in Tracker class
  • updateEmail() in ReferralCustomer class
• Changes the type result of Event from EasyPostResource to Map<String, Object>

Bug Fixes

• Adds two missing attributes in the Event class: pendingUrls and completedUrls
• AppEngine default timeout is now the same as connection timeout