Changelog
- *matplotlib* is now an optional requirement
- Added `mass_of_element()`, `atom_masses()`, `mass_center()` and `gyration_radius()` to `structure` subpackage
- Increased performance of `AdjacencyMap` and `sasa()`
Note
Currently the build fails for the Windows x64 wheels, due to an error in the unit tests for the new SASA implementation. This will (hopefully) be fixed in the next version.