Release v3.0.3

• (@UncleSamSwiss) Enabled incremental loading of devices
• (@UncleSamSwiss) Removed direct access to DeviceManagement.handleXxx() methods (use handler and similar properties instead)
• (@UncleSamSwiss) Added identifier property to DeviceInfo for human-readable identifiers
• (@UncleSamSwiss) Device refresh responses can no longer be a boolean and 'device' was renamed to 'devices'.
• (@UncleSamSwiss) Added info icon and possibility for actions to be a link (by providing a url property instead of a handler function)