ScikitManifoldSpectralEmbedding(), the spectral
embedding utility function, now works with behavior of
igraph v. 2.0.0, by removing self-loops in the adjacency
matrix (setting diag = F). In addition the function was
changed from the deprecated igraph::graph.adjacency() to
igraph::graph_from_adjacency_matrix() (#18).NEWS.md file to track changes to the
package.