Added calculation of positions of atoms in ClusterSpace.
Description
- Added access to positions of atoms in cluster_space.py: following Mattias' implementation in tools/geometry.py (related task mentioned at the end of this description) and the use case provided in the description of the task.
Summary of changes
- Added method in cluster_space.py
- Added related unit tests
Additional information
(#359)
Closes #361 (closed)