Breaking changes

• Python 2 no longer supported, Python 3.6 is the minimum required version
• PTZ commands (e.g. zoom_in, move_left) require boolean value for start parameter, rather than "start" and "stop" strings for the action parameter

New features

• Smart motion detection events added as is_human_detected and is_vehicle_detected properties.
• Added methods to query separate channels to allow using multiple cameras on NVRs.
• New position_abs PTZ function to allow for absolute angular positioning.
• New function to override ONVIF login checking for admin-only.
• Type annotations added to allow for type checking.