1dim smoothing and moving moments (smoothing)

smooth	1-dimensional smoothing Simplified & modified http://www.scipy.org/Cookbook/SignalSmooth
variance	Moving variance.
std	Moving standard deviation.
skew	Moving skew.
median	Moving median.
min	Moving minimum.
max	Moving maximum.
percentile	Moving percentile.
autocorr	Moving autocorrelation.
corr	Moving correlation.
crosscorr	Moving crosscorrelation.