changing 'r' to 'radius' in nodeStyles to match convention
torching alchemy.updateGraph and refactoring alchemy.startGraph
API to return properties + initial working implementation of node.setStyle method
refactoring edges to store id as source-target and position as position in the array of created edges
refactored startGraph method + create methods + setStyle methods
general cleanup + cleaning up Node construction
cleanup + setProperties() working on node and edges
fix dragging + _adjacentEdges
Merge pull request #381 from hustonhedinger/styleMethods

Style methods