Merge pull request #3148 from RosettaCommons/vmullig/selection_counter
Add a SimpleMetric that counts the number of residues in a pose or selection
Requested by @srgerb.
Tasks:
- [x] Add the SimpleMetric.
- [x] Unit tests.
- [x] Documentation.
- [x] Move to core.
- [x] Integration test.
- [x] Change name to SelectedResidueCountMetric.
- [x] Documentation, too.
- [x] Beauty.