Added AddDoubleEdge(this myIGraph, myOutVertex, myInVertex, myEdgeId1 = null, myEdgeId2 = null, myLabel = null, myEdgeInitializer = null) for lazy developers who want to add two edges in the opposite direction at once.
Added AddDoubleEdge(this myIGraph, myOutVertex, myInVertex, myEdgeId1 = null, myEdgeId2 = null, myLabel = null, myEdgeInitializer = null) for lazy developers who want to add two edges in the opposite direction at once.

Vanaheimr/Balder,Vanaheimr/Balder