Implementation for Agorajs of the Fast Node Overlap Removal (VPSC) algorithm. courtesy to the webcola framework https://github.com/tgdwyer/WebCola Tim Dwyer, Kim Marriott, Peter J.Stuckey A new algorithm for removing node overlapping in graph visualization, Graph Drawing 2005 Pages 153-164, Lecture Notes in Computer Science, vol 3843. 2006, Springer, Berlin, Heidelberg ISBN 978-3-540-31667-1, Online ISBN 978-3-540-31667-1, https://doi.org/10.1007/11618058_15. (https://link.springer.com/chapter/10.1007%2F11618058_15)