Update allow to pass prune function

Fixes #38. Also various ETL updates for cleaning the data
Add Gephi Based Plotting

Plot results in Gephi to visualize output
various updates
Bug Fix + Adding Omega vs. Runtime

Reflected change in omega score location in the JSON file in this script

Added ability to limit metrics to only a specific dataset.
Added a plot of runtime vs. accuracy. Still needs some work to make it
nicer (algorithm type should be represented by color and not by text
label).