SimTk/openmm — pull request #643 by swails (2014-10-06 22:00:03+00:00)
Title: [WIP] Add functions to Quantity to compute the max, min, standard deviation and average of a Quantity, returning a Quantity.

The standard deviation is the square root of the variance, not the "sample standard deviation". It should be the same thing that `numpy.std` would return on a sequence.

This should address #642.