MGOS: A library for molecular geometry and its operating system. - Deok-Soo Kim; Joonghyun Ryu; Youngsong Cho; Mokwon Lee; Jehyun Cha; Chanyoung Song; Sangwha Kim; Roman A. Laskowski; Kokichi Sugihara; Jong Bhak; Seong Eon Ryu (Comput. Phys. Commun., 2020)