Slight update

Merge pull request #64 from ldecicco-USGS/master

Fixed some bugs with seasons resids.

minor updates.

Merge pull request #60 from ldecicco-USGS/master

Back to basics.

CRAN update.

Merge pull request #52 from ldecicco-USGS/master

Added error handling. Fixes #50.

Minor help file and vignette updates.

Merge pull request #46 from ldecicco-USGS/master

Clean up repository.

GRAN with citation

Merge pull request #45 from ldecicco-USGS/master

Added citation file.

Real GRAN release

Merge pull request #43 from ldecicco-USGS/master

Updating version.

GRAN release

Merge pull request #42 from ldecicco-USGS/master

Added citation file.

Expose sysdata

Merge pull request #39 from ldecicco-USGS/master

INFO User files bug fixes.

Second CRAN release

Merge pull request #28 from ldecicco-USGS/master

new roxygen.

Accepted to CRAN

Merge pull request #15 from ldecicco-USGS/master

Improving help file text.