Balena-sdk

* Fix docs for `device.config_var.set` [Otavio Jacobi]
* Properly surface RequestErrors from balena-api [Otavio Jacobi]

* Release: throw in case of trying to get a release with an empty string uuid [Otavio Jacobi]
* Device: do not operate on empty or ambiguous device UUIDs [Otavio Jacobi]

* V7 model: Add the device.should_be_operated_by__release property [Otavio Jacobi]
* Drop the application.get_app_by_owner method [Otavio Jacobi]
* V7 model: Change image.image_size to str [Otavio Jacobi]
* V7 model: Replace device.overall_status offline & idle with disconnected, reduced-functionality & operational [Otavio Jacobi]
* V7 model: Change user, application & device actor, to return a deferred property when selected [Otavio Jacobi]
* V7 model: Replace should_be_running__release with is_pinned_on__release [Otavio Jacobi]
* V7 model: Drop the supervisor_release resource [Otavio Jacobi]
* Add the os.get_supervisor_releases_for_cpu_architecture() method [Otavio Jacobi]
* V7 model: Replace should_be_managed_by__supervisor_release with should_be_managed_by__release [Otavio Jacobi]
* V7 model: Drop the device.vpn_address property [Otavio Jacobi]
* V7 model: Drop the device state & status_sort_index sdk-only property typings [Otavio Jacobi]
* V7 model: Drop the gateway_download resource [Otavio Jacobi]
* [BREAKING]: Update all API queries to use the v7 model [Otavio Jacobi]

(2020-07-15)

* DeviceWithServiceDetails: preserve the image_install & gateway_downloads [Thodoris Greasidis]
* typings: Deprecate DeviceWithImageInstalls in favor of the Device type [Thodoris Greasidis]

(2020-07-14)

* Fix is_private typings for device type [Stevche Radevski]

(2020-07-14)

* Add an organization parameter to all billing methods [Thodoris Greasidis]