adding WithLogger option (bold-commerce#99)

Co-authored-by: Gord Currie <curriegrr2@gmail.com>

Create custom unmarshaller for orders (bold-commerce#100)

* Create custom unmarshaller for orders

- We noticed an issue where some older orders were being sent
with line items that had their properties field set an empty
JSON object rather than the expected array. This was causing
an error when attempting to unmarshal.

* cleanup tests

Co-authored-by: Gord Currie <gord.currie@boldcommerce.com>

adding go mod (bold-commerce#77)

Adding pre_launch_enabled to shop model (bold-commerce#63)

- updates fixture, model and tests
- adds support for pre_launch_enabled flag on shop model

Remove omit_empty from json tag for Fulfillment.NotifyCustomer (bold-…

…commerce#56)

Fixed Bug with backwards compatibility and api version (bold-commerce#53

)

Fix back compatibility bug where not passing in the optional WithVersion option causes the globalApiPathPrefix to be an empty string instead of admin

Shopify API versioning support (bold-commerce#48)

* Build an Options function struct to optionally pass into the NewClient function in order to optionally prefix all API calls made with that function with a version. This is to adhere to the new Shopify API versioning changes, without making this a breaking change.

int to int64 type conversion for ID fields (bold-commerce#46)

* Convert internal ids to int64 from straight int

Add Properties to Shop (bold-commerce#44)

* Added all properties shopify passes to shop.json

convert some tests to use RegisterResponderWithQuery (bold-commerce#36)