attribute_handler operators = & copy constr. bugs correction
attribute_handler operators = & copy constr. bugs correction

david-cazier/CGoGN_2,etienneschmitt/CGoGN_2,untereiner/CGoGN_2,untereiner/CGoGN_2,cgogn/CGoGN_2,cgogn/CGoGN_2,david-cazier/CGoGN_2