Avoid division by zero if headlength=0 for quiver#7525
Merged
efiring merged 3 commits intomatplotlib:masterfrom Nov 28, 2016
rmjarvis:quiver-nohead
Merged
Avoid division by zero if headlength=0 for quiver#7525efiring merged 3 commits intomatplotlib:masterfrom rmjarvis:quiver-nohead
efiring merged 3 commits intomatplotlib:masterfrom
rmjarvis:quiver-nohead