Remove GET /users/:id/addresses and GET /users/:id/payment_methods
Return user for POST /users/:id/payment_methods and POST /users/:id/addresses
Add endpoints to retrieve user transactions
Eager load models in development
Update ServiceResource class
Add Address service resource model
Add PaymentMethod service resource model
Add Currency service resource model
Add PricepointPrice service resource model
Add Pricepoint service resource model
Add Discount service resource model
Add Price service resource model
Return code, used, used_by, used_at in coupon response
Return created_at and updated_at in all serializers