non/spire — pull request #303 by barnardb (2014-08-14 08:01:29+00:00)
Title: Correct a few errors in the User's Guide

I can't tell from a quick glance at the implementation whether the bounds of the image of atan2 are theoretically open or closed, so I went with open-closed as it is often defined, even though in practice results can compare equal to -pi.