ENH: Split mpi4py world
Split from !225 (closed).
Add functionality to divide mpi4py communicator into multiple ones to run several independent simulations at the same time with neb(..., parallel=True).
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Split from !225 (closed).
Add functionality to divide mpi4py communicator into multiple ones to run several independent simulations at the same time with neb(..., parallel=True).