This commit fixes the bug described in #278.

gcpy/file_regrid.py
- Change the default value for weightsdir from False to "." where
  command line arguments are parsed.  This will prevent a TypeError.
  This bug was likely caused by a cut-n-paste error.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

gcpy/file_regrid.py
- Now use "." as the default value for --weightsdir, which will save
  regridding weights to the current directory.

CHANGELOG.md
- Updated accordingly

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

This merge brings PR #279 (Bug fix: Use proper default value for
weightsdir in file_regrid.py, by @yantosca) into the GCPy 1.4.1
development stream.

This PR fixes an issue (i.e. incorrect type of default variable resulting
in a TypeError) when calling file_regrid.py without specifying a value for
the --weightsdir command line argument.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

CHANGELOG.md
docs/source/conf.py
gcpy/_version.py
- Changed version numbers

setup.py
- Removed, this is for distributinog on PyPi (which we no longer do)

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

This is the official release commit for GCPy 1.4.1.

This is a bugfix release that fixes the issue that was described in
issue #278.  This was resolved with PR #279.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>