Indirect Influences for Graphs

            Algorithms to calculate indirect influences and others for matrices. The
functions given with this package are:
 * polyexpm - Function that returns the exponential matrix of a polynomial
matrix.
 * polylogm - Function that returns the logarithm matrix of a polynomial
matrix.
 * micmac - Function that applies the MICMAC method to a direct influences
matrix.
 * pagerank - Function that applies the PageRank method to a direct influences
matrix.
 * pwpIndInf - Function that applies the PWP method to a direct influences
matrix.
 * heatkernel - Function that applies the Heat Kernel method to a direct
influences matrix.
 * sum_matrix_blocks - Function that sums the blocks of a squared matrix.
 * part_adj_mat - Function that calculates the adjcacency matrix of a partition
graph for a given graph.