0.24.0

• Switched to using reckon gradle plugin. This is an opinionated version similar to gradle-gitflow but there is no need
  to use gitflow
• Stopped using gitflow and simply use master with tagged versions for releases
• removed NameSpec for naming vertices and all associated methods.
• Traversal methods are now in TraversalDsl trait
• depthFirstSearch is now split into two methods preOrder, and postOrder
• breadthFirstSearch has been simplified
• added new traversals classifyEdges, connectedComponent
• Can now change key of vertex by assigning property in vertex method closures
• Can now change one or two of edge by assigning property in edge method closures