Document agglo.Rag constructor
Document graph copy and build functions
Document feature cache and neighbor functions
Document set_probabilities function
Remove pyflakes warnings
Add docstring for set_orientation
Add doc for set_watershed
Add doc for set_ground_truth
Add doc for set_exclusions
Add docs for merge queue building
Add doc for agglomeration
Add documentation for agglomerate_count
Overhaul learn_agglomerate()
Add docstring to learn_flat
Fix inaccurate return value in doc
Add docs for learning functions, fix typo
Document replay_merge_history function
Update UCM docs
Update docs for merging nodes
Add docs for merging functions