Some speedup - Math.floor is really very slow, whereas (val << 0) is really fast.
Start to move to ThinkStats instead of FastStats. FastStats looses lots of memory.
fix: free nav timing accumulator references when done with them.
use the newest mongoose
Use streams instead of one huge get to get performance data.
refactor(db): Remove `done` from model, only use promises.
refactor(backend): Only use promises, remove all `done` callbacks
Merge branch 'speedup'