Wanting to Add support for Trigonometric and other numpy functions for errorpropagation

[toihr]

so because i need this package for physics and in physics we have to deal with alot of trig. functions all the time so handling errors with sin cos etc. is kind of a pain now im trying to add support for those functions my main problem now is in the measurements.py file doesnt seem to be the place where those functions would be defined so i can make my addition to the code.

[jthielen]

Right now, Pint does not appear to simultaneously support NumPy and Measurements/Uncertainties at the same time (see #918), so this will unfortunately be quite difficult to implement. If you still wanted to explore how the NumPy functions are implemented in pint, see the pint/numpy_func.py file.

[toihr]

ah interesting ill try dabbling around with that a bit maybe ill get somewhere