as_ranked               Convert a tree to ranked tree
common_tips             Find shared tip labels
keep_tips               Prune a tree
random_tree             Create a random ranked phylogeny
rankedPhylo             Create a ranked tree
read_newick             Read a newick tree
rnni                    Calculate RNNI distance
rrnni                   rrnni: Calculate a distance and a path in RNNI
                        space
sort_tips               Sort tip labels
tips                    Extract tips from tree
