new GRAN release w/ modern functions

Merge pull request #42 from jread-usgs/master

rolling window for MAD(x,w)

GRAN initial release

Merge pull request #33 from jread-usgs/master

updates for v0.3.1

v0.2.0 syntax for sensoorQC modified. Added data into package

Merge pull request #4 from jread-usgs/master

v0.2.0 syntax change for functions, package cleaning

v0.1.0 sensorQC package

Merge pull request #2 from jread-usgs/master

v0.1.0 release changes