Keeping the notion of lazily calculated heavy hitters, but fixing it to actually be a lazy val
Add better to string
Silly bug re-using an iterator.
Add a helper function to build sketch maps since they have the embedded function now
Pass the params in, seems to be the more popular approach.
Remove the heavy hitters from the Case class, but remove the other cached usages too. Users can access heavy hitters as a one time call to heavyHitters with no caching, or request the frequencyWithHHCache if they expect to do the lookups often
Bad implicit left in place
Merge pull request #305 from twitter/feature/sketchmapReadPerformanceFix

Keeping the notion of lazily calculated heavy hitters, but fixing it to ...