steenfatt

Support for directed, weighted graphs and code cleanup

3

I have [[see corresponding paper]](https://www.researchgate.net/publication/329425689_Learning_Structural_Node_Representations_on_Directed_Graphs_Volume_2_Proceedings_The_7th_International_Conference_on_Complex_Networks_and_Their_Applications_COMPLEX_NETWORKS_2018) ... * added support for directed, weighted graphs * added support for partially embedding the graph * cleaned up the code, in particular removed unused...