﻿version 1.0, 2012-07-08 -- initial release

version 1.01, 2012-07-09 -- edited README

version 1.1, 2013-02-20 -- reset_units() runs on first import, and corresponding
changes to documentation. Also, don't mess up the random number generator
state, in case something else is using it. Added units pW, fF, aF.

version 1.11, 2013-02-21 -- fix packaging (edit MANIFEST.in so README gets
included).
