should be able to interchange Quantity and qa.quantity...otherwise its unuseful to use qa.quantity and cannot use that output in qa.convert for example.
In glish one can a='10km' the dq.convert(a, 'm') now with the qa setting if we have a quanta i have to convert it to a Quantity for passing it back into qa...for example qa.convert(v=Quantity(a.value, a.units), tounits='m')
input need to be interchangeable between strings and Quantity...if its hard..string is preferred by me (KG)
Already mentioned in the measures section....for ease of use we need somehow to be able to automatically convert to quanta from string..... in glish dq.quantity('10h20m30s') will return [value=155.125, unit=deg].