Get opportunity status change report

Get an opportunity status change report. The date range is optional. A report may be requested for a specific time period or overall. You can specify either a `query` or `smart_view_id` (but not both) to filter opportunities included in the report. The report may optionally be filtered by the opportunity user. The following fields are returned (when requesting an overall report, some inapplicable fields will not be returned): * `status_overview`: A list of all statuses with: * `status_id`, `status_label`, `status_is_deleted`: The ID and label of the status, and whether it was deleted. * `started`: Number of opportunities in this status at the start of the period. * `ended`: Number in this status at the end. * `change`: Net change during the period (`ended` minus `started`). * `change_percent`: Net change in percent. * `gained`: Number that were not in this status at the beginning but were at the end. * `lost`: Number that were in this status at the beginning but were not at the end. * `entered`: Number that entered this status at some point during the period. * `left`: Number that left this status at some point during the period. * `_queries`: A dictionary containing search queries for the different states (`started`, `ended`, `gained`, `lost`, `entered`, `left`). Search queries are wrapped in a nested `opportunity(...)` clause. To pass the query to the opportunities API endpoint, use only the query within the parentheses. * `_leads_page_urls`: A dictionary containing paths to the lead search UI page. * `_opportunities_page_urls`: A dictionary containing paths to the opportunity UI page. * `status_transitions`: A list of all status transitions (aggregated by start/end status) for the given period with: * `from_status_id`, `from_status_label`, `from_status_is_deleted`: Starting status (null for created opportunities). * `to_status_id`, `to_status_label`, `to_status_is_deleted`: Ending status. * `count`: The number that transitioned. * `_query`: The search query for those records. * `_leads_page_url`: Path to the search UI page. * `_opportunities_page_url`: Path to the opportunity UI page. * `status_transitions_summary`: Status transitions summarized for the period. E.g. an opportunity that went A→B→C is counted as A→C.