Update elwise reduction doc, start rolling reduction doc
Add some notes on the pandas impl
Start rolling reduce reference code
Add some discussion on efficient rolling window kernels
Add simpler example for rolling max, and implement ascending minima

The ascending minima implementation also includes the `minp`
parameter, so that has slightly more work in the algo.
Updates to the docs, mostly removing old stuff
Merge pull request #248 from mwiebe/docs

Updates to the docs, mostly removing old stuff
Merge pull request #233 from mwiebe/rolling_reduce

Rolling reduce design doc
travisci says it supports python 3.4 now, give it a shot
Merge pull request #257 from mwiebe/tci34

travisci says it supports python 3.4 now, give it a shot
Update version number to 0.5