Add AccessScopes (bold-commerce#180)

- Supporting the oauth/access_scopes.json endpoint

Co-authored-by: Gord Currie <[email protected]>

Add PriceRule prerequisite field setters (bold-commerce#144)

- prior to this change it was impossible to call the Shopify API
   specifying these fields since the type was not exposed.

Add option to support custom http client (bold-commerce#130)

- add WithHTTPClient as an option

Co-authored-by: Fidel Ruiz <[email protected]>

Fix error unmarshaling when key value is string (bold-commerce#125)

Add unstable as valid api version (bold-commerce#119)

Co-authored-by: Craig Dykstra <[email protected]>

Add Collection endpoint (bold-commerce#115)

Co-authored-by: Geoffrey Chen <[email protected]>

FulfillmentService was missing from the client (bold-commerce#114)

Added FulfillmentService to client

Add PriceRule resource (bold-commerce#113)

* Add PriceRule resource

Add shipping zones service (bold-commerce#110)

* Add shipping zones service

Small fix for custom deserializer edge case (bold-commerce#111)