SciTools/iris — pull request #1184 by pp-mo (2014-06-20 17:23:04+00:00)
Title: Mark a longitude coordinate loaded from netCDF as "circular" if the bounds look right.

Data loaded from files with higher-resolution longitudes was not loading as 'circular', owing to floating-point accuracy problems when testing that all coordinate steps are similar.
This adds rules behaviour to test bounds instead, when they exist, which gets around that for some data.