FIX: Add show parameter and return figure handle
FIX: Make backward compatible by returning both perc and fig
FIX: Decprecation warning + drop_log_stats function
FIX TEST: Addressing Alex's comments + tests
Addressing minor comments from Alex
Fixing PEP8
Merge pull request #1398 from mainakjas/fix_drop_log

FIX: Return figure handle in plot_drop_log