scikits.learn -> scikit-learn
genomic_signal module file -> _genomic_signal
caching: save and load memmapped .npz files
use gffutils v0.8 syntax (overlapping_features -> region)
add plotutils.ci_plot for plotting 95% CI around lines
Merge branch 'v0.5dev' of https://github.com/daler/metaseq into v0.5dev

Conflicts:
	setup.py