bug fix, should parse fasta from string, not file
adding script that decomposes tree on well-supported, deep nodes, writes concatenated alignments for all the genus members below those nodes
actually, this script is not necessary
adding script that splices out coordinates of a named locus (say, ITS) for a given set of taxa from a PhyLoTA cluster
adding script that maps a rapidly evolving locus (say, ITS-1) onto well supported nodes in a megatree
added skip pattern for results directories
added keep_taxa() method, which retains the provided taxa from a FASTA pseudo-object
added get_aligned_locus_indices(), which returns an array of indices for the coordinates of a named locus into an alignment, with reference to the seed GI for that locus