@software{britton_smith_2018_1174374, author = {Britton Smith and Meagan Lang}, title = {ytree: merger-tree toolkit}, month = feb, year = 2018, publisher = {Zenodo}, version = {ytree-2.0.2}, doi = {10.5281/zenodo.1174374}, url = {https://doi.org/10.5281/zenodo.1174374} }