v3 bills changes

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

v2	v3
Create a bill with `POST /v2/Crud/Create/Bill.json`. For international vendors, retrieve the BILL exchange rate with `POST /v2/GetDynamicExchangeRateQuote.json`. When you create a bill for an international vendor, you must set the exchange rate in your request.	Create a bill with `POST /v3/bills`. The request and response field names have changed. Relevant fields are grouped under the `billLineItems` and `invoice` objects. When you create a bill for an international vendor, the local currency amount and exchange rate are calculated automatically based on the USD funding amount. See Bills for more information.
Read a bill with `POST /v2/Crud/Read/Bill.json`.	Get bill details with `GET /v3/bills/{billId}`. `billId` is now set as a path parameter. See Get bill details in the API reference for more information.
List bills with `POST /v2/Crud/List/Bill.json`.	Get list of bills with `GET /v3/bills`. 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 `createdTime` in the ascending order with `sort=createdTime: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 bill with `POST /v2/Crud/Update/Bill.json`.	Replace a bill with `PUT /v3/bills/{billId}`. This is a PUT operation and `billId` is now set as a path parameter. The request and response field names have changed. Use the v3 PUT operation to add, remove, or replace the number of line items in a bill. You can also update other bill details. The PUT operation replaces existing information with the updates in your request. Update a bill with `PATCH /v3/bills/{billId}`. This is a PATCH operation and `billId` is now set as a path parameter. The request and response field names have changed. Use the v3 PATCH operation to modify existing line item details, such as `amount` and `description`. You can also update other bill details. See Replace a bill and Update a bill in the API reference for more information.
Delete a bill with `POST /v2/Crud/Delete/Bill.json`.	Archive a bill with `POST /v3/bills/{billId}/archive`. `billId` is now set as a path parameter. In the response, `isActive` is now `archived`. The `archived` field is boolean. See Archive a bill in the API reference for more information.
Undelete a bill with `POST /v2/Crud/Undelete/Bill.json`.	Restore a bill with `POST /v3/bills/{billId}/restore`. `billId` is now set as a path parameter. In the response, `isActive` is now `archived`. The `archived` field is boolean. See Restore an archived bill in the API reference for more information.