Floor division by another quantity with the same unit is not dimensionless #205

Hello everyone,

I am trying to use the // operator with a Quantity array. However, the returned unit is wrong, as I would expect dimensionless when dividing by another quantity with the same unit.

Here is a short snippet to reproduce the behavior:

q = pq.Quantity([43, 40, 34, 25], units=pq.ms)

print("/", q / (3 * pq.ms))
print("//", q // (3 * pq.ms))

The output is:

/ [14.33333333 13.33333333 11.33333333  8.33333333] dimensionless
// [14. 13. 11.  8.] ms

Version information:
Python 3.9.12
quantities==0.13.0

Thank you!