* Fixed a bug in `Tree.distance_between` when one node is the other's parent * Thanks, yueyujiang!
1.1.38
* Fixed a typo that caused infinite recursion when attempting to copy a `treeswift.Node` object (thanks, JSdoubleL!)
1.1.37
* Added `write_tree_nexus` function to `Tree` objects
1.1.36
* Fixed bug where `node_params` and `edge_params` weren't getting copied when extracting a subtree or copying a tree (thanks, pekarj!)
1.1.35
* Added ability to parse Newick files where a single tree is written across multiple lines
1.1.34
* Added `Tree.num_cherries()`, which returns the number of cherries (i.e., internal nodes where all children are leaves) in a `Tree` * Note that, if a `Tree` is multifurcating, an internal node is only counted as a cherry if *all* of its children are leaves