Fixed overzealous pinning of nodes dragged to editors.
Fixed overzealous pinning of nodes dragged to editors.

Specifically, a node dragged from within an editor would be accepted as a pinning-drag into that very same editor. Now a drag must originate from outside the editor to be considered for pinning.

GafferHQ/gaffer,lucienfostier/gaffer,johnhaddon/gaffer,goddardl/gaffer,paulondc/gaffer,chippey/gaffer,johnhaddon/gaffer,hradec/gaffer,paulondc/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,paulondc/gaffer,cedriclaunay/gaffer,boberfly/gaffer,goddardl/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,paulondc/gaffer,appleseedhq/gaffer,hradec/gaffer,hradec/gaffer,johnhaddon/gaffer,ivanimanishi/gaffer,davidsminor/gaffer,appleseedhq/gaffer,johnhaddon/gaffer,cedriclaunay/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,chippey/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,andrewkaufman/gaffer,davidsminor/gaffer,boberfly/gaffer,andrewkaufman/gaffer,appleseedhq/gaffer,boberfly/gaffer,goddardl/gaffer,ivanimanishi/gaffer,ivanimanishi/gaffer,chippey/gaffer,lucienfostier/gaffer,davidsminor/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,cedriclaunay/gaffer,hradec/gaffer,chippey/gaffer,ImageEngine/gaffer,goddardl/gaffer,ivanimanishi/gaffer,hradec/gaffer,johnhaddon/gaffer,cedriclaunay/gaffer,ImageEngine/gaffer,davidsminor/gaffer,lucienfostier/gaffer,boberfly/gaffer