Update(export): Updated the export method to accept modelgrid in **kwargs#651

Merged

langevin-usgs merged 2 commits intomodflowpy:developfrom jlarsen-usgs:develop

Sep 26, 2019

+503-194

Commits on Sep 20, 2019

Update(export()): Updated the export method to accept a user supplied modelgrid in **kwargs
jlarsen-usgs
committed

Commits on Sep 23, 2019

added masked_vals **kwarg to output_helper() for netcdf exporting
jlarsen-usgs
committed