DCG 0.9.2

• Fixing vignettes. Put external plots in vignettes folder. Use png::readPNG and grid::grid.raster to render plots in vignettes.

DCG 0.91

• Importing data. When importing network data as a similarity matrix, network data (edgelist or matrix) first gets transformed into a undirected adjacency matrix. Then the adjacency matrix gets transformed into a similarity matrix.