List pull requests

Get a list of pull requests ### Expanding the pull request collection response LaunchDarkly supports expanding the pull request collection response to include additional fields. To expand the response, append the `expand` query parameter and include the following: * `deployments` includes details on all of the deployments associated with each pull request * `flagReferences` includes details on all of the references to flags in each pull request * `leadTime` includes details about the lead time of the pull request for each stage For example, use `?expand=deployments` to include the `deployments` field in the response. By default, this field is **not** included in the response.