Separate out getting ranked problems/locations for files/classes/methods
Remove extraneous require
Simplify logic that determines if there are hotspots to output
Rename items to hotspots.  Easier to understand
Move unnecessary separation of hotspot analyzer init and usage
Hotspots now rendered as a hash, surface and fix failing test

Was related to Location#hash
Annotate where hotspots are calculated
Add history
Merge pull request #128 from metricfu/separating_hotspot_concerns

Separating hotspot concerns