Merge pull request #45 from ClimateImpactLab/dependabot/pip/netcdf4-1.6.4

Bump netcdf4 from 1.6.0 to 1.6.4

Author: brews

requirements_dev.txt

@@ -2,7 +2,7 @@ numpy
 xarray
 pandas
 cftime==1.6.1
-netCDF4==1.6.0
+netCDF4==1.6.4
 wheel==0.33.6
 flake8==3.7.8
 tox==3.14.0