Prepare for release 3.0.0-RC1
Prepare for release 3.0.0-RC1

KristianKarl/graphwalker-project,GraphWalker/graphwalker-project,KristianKarl/graphwalker-project,GraphWalker/graphwalker-project,KristianKarl/graphwalker-project,GraphWalker/graphwalker-project