API method to return all variables with their values

Would be great to see this feature!

The system we are building is going to read a range of values from multiple sensors, sometimes we will not know which sensors are active on the device. It’s a bit of a pain to have our servers running repeated requests for sensors that may not be connected to the device.

Plus the coding overhead to do multiple calls and maintain them as we develop is tedious.

Hope you can bump this one up the ladder