Additions

• Added supports_request_format to deployments and environments
• Added system to environment detail/list
• Added empty field to RevisionList, which is used for docker support in which you don't use the deployment revision concept
• Added overage_usage to the response of organizations_get

Changes

• None is now allowed as base_environment of environments, which is necessary for docker support
• Fields input_type and output_type are now optional for deployments create and get. They are None for deployments that don't support request format.
• request_retention_mode is now optional for deployment versions
• Added max description length and don't allow None for it in exports/imports
• A fallback was added to wait_for_deployment_version such that the deployment version status is used when it has no permission to retrieve the environment status
• Environment system field is used in wait_for_environment which is necessary for docker support