v3 customers changes

In v3, there are a range of improvements and new features with customer operations.

v2	v3
Create a customer with `POST /v2/Crud/Create/Customer.json`.	Create a customer with `POST /v3/customers`. The request and response field names have changed. Relevant fields are grouped under the `contact`, `billingAddress`, and `shippingAddress` objects. See Customers for more information.
Read a customer with `POST /v2/Crud/Read/Customer.json`.	Get customer details with `GET /v3/customers/{customerId}`. `customerId` is now set as a path parameter. See Get customer details in the API reference for more information.
List customers with `POST /v2/Crud/List/Customer.json`.	Get list of customers with `GET /v3/customers`. Filtering and sorting values are now query parameters. For filtering, use the `filters=field:op:value` format . The operator values are now acronyms. For example, `=` is now `eq` and `>=` is now `gte`. For sorting, use the `sort=field:order` format. For example, sort by `dueDate` in the ascending order with `sort=dueDate:asc`. The response includes `nextPage` and `prevPage` values for you to navigate between the pages of results. See Search operations with lists for more information.
Update a customer with `POST /v2/Crud/Update/Customer.json`.	Update a customer with `PATCH /v3/customers/{customerId}`. This is a PATCH operation and `customerId` is now set as a path parameter. The request and response field names have changed. In your v3 PATCH request, set the customer fields you want to update. All the customer fields are not required in your request. See Update a customer in the API reference for more information.
Delete a customer with `POST /v2/Crud/Delete/Customer.json`.	Archive a customer with `POST /v3/customers/{customerId}/archive`. `customerId` is now set as a path parameter. In the response, `isActive` is now `archived`. The `archived` field is boolean. See Archive a customer in the API reference for more information.
Undelete a customer with `POST /v2/Crud/Undelete/Customer.json`.	Restore a customer with `POST /v3/customers/{customerId}/restore`. `customerId` is now set as a path parameter. In the response, `isActive` is now `archived`. The `archived` field is boolean. See Restore an archived customer in the API reference for more information.