v4.4.0

• Adds Billing.retrieve_payment_methods(), Billing.fund_wallet(), and Billing.delete_payment_method() functions
• Captures OS information in the user-agent header for easier debugging
• Update functions now use patch instead of put under the hood to better match API behavior and documentation. The behavior of these functions should remain the same

v3.5.1

• Backports newer user-agent header

v4.3.0

• Adds the EndShipper Beta class with create, retrieve, all, and save functions
• Requests will now fail fast with an error if an API key is not provided instead of making a live API call with no key
• Fixes a bug where the library could not properly parse the response of deleting a child user
• Fixes a bug where you could not update a webhook due to a wrong number of arguments error

v4.2.1

• Corrects the Beta namespace for the new Referral class

v4.2.0

• Adds a lowest_rate() function to Orders and Pickups
• Adds a Shipment.get_lowest_smartrate() function and a shipment.lowest_smartrate() function
• Removes the unusable carrier param from Address.create_and_verify along with the dead message conditional check
• Add beta Referral class for White Label API with these new functions: create(), update_email(), all(), and add_credit_card()

v4.1.2

• Rolls back the original connection behavior of establishing a new connection for every request (restores previous expectations for multithreaded implementations)

v4.1.1

• Fixes a bug that prematurely closed connections when using multithreading by wrapping requests in a mutex (closes #148)

v4.1.0

• Adds support for custom client connections (#142)
  • Reduces memory usage by reusing connections
• Extends all objects with Enumerable allowing for iterator patterns (#143)

v4.0.0

• Bumps minimum Ruby version from 2.2 to 2.5
• Bumps dev dependencies
• Documents each interface of the project in code
• Overhauls the test suite with full coverage
• Introduces Rubocop and lints the entire project
• Removes the unusable Print and PrintJob objects
• Removes deprecated and unusable stamp_and_barcode_by_reference method on the Batch object
• Explicitly returns an error of "not implemented" for Rate.all and Parcel.all
• Removes the Shipment.get_rates function as shipments already contain rates. If you need to get new rates for a shipment, use the Shipment.regenerate_rates function instead
• Removes the parameters from Address.verify as they are unusable
• Removes the deprecated http_status property of the EasyPost::Error object as it was replaced with status
• Fixes a bug that would append an extra id field to each retrieved object
• Various other small improvements and bug fixes

v3.5.0

• Adds the update_brand method to the user object (closes #122)