mBuild 0.16.0

Features

• Add smiles string conversion using pybel backend by @daico007 in #1056
• Trim coordinate_transform.py, new features for spin method by @daico007 in #1054
• Updates to energy minimization routines by @chrisiacovella in #1061, #1076, #1078.
• Produce n=2 when ports are not capped by @jaclark5 in #1069
• Add more notes about unit conversions to the hoomd functions by @chrisjonesBSU in #1062
• Reorder bond, angle, and dihedral in write_lammpsdata by @jaclark5 in #1071
• Lammps molecule number by @jaclark5 in #1073
• Lammps lj unit charges by @jaclark5 in #1086
• Clearer error message for fill_region by @RainierBarrett in #1088

Bugfixes

• Fix bug related to get_boundingbox() by @daico007 in #1059
• Patches for element reading in lattice builder by @CalCraven in #1066

Maintenance

• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #1053, #1058, #1063, #1074 #1075, #1079, #1083, #1089
• Turn off fail-fast by @daico007 in #1067
• drop py3.7 from testing by @daico007 in #1055
• Migrate GOMC and CHARMM writer by @daico007 in #1064

New Contributors

• @jaclark5 made their first contribution in #1069
• @RainierBarrett made their first contribution in #1088

Full Changelog: 0.15.1...0.16.0