Uses pruning strategy classes, moves to 0.2.3-SNAPSHOT for BiNChE dependency.
Adds separation between Fragment enrichment (weighted Saddlesum + structure only ontology + certain pruning strategy) and Weighted enrichment (where the part of the ontology is not fixed).
Changes weighted/fragment example.
Handles case of hiding nodes when no multiple hypothesis correction is done.
Additional examples for weighted/fragment case.
Adds separated pruning strategies for Fragment and Weighted analysis.
Merge branch 'feature/usePruningStrategy' into develop