astrofrog/wcsaxes — pull request #43 by lpsinger (2014-06-12 16:55:32+00:00)
Title: Inherit default grid style from matplotlib.rcParams

Based on `matplotlib.axis.YTick._get_gridline`. Note that Matplotlib implements gridlines with `Line2D`, whereas wcsaxes implements gridlines with `PathPatch`. The two have slightly different option styles regarding dashes, so we have to map between them.