pip install doesn't install submodules

[evamaxfield]

pip install git+https://github.com/AllenCellModeling/pytorch_fnet.git will install the base modules but does not install fnet.nn_modules for instance.

import fnet works and imports the module and the defined imports from its __init__.py

import fnet.nn_modules fails due to two things:

1. setup.py needs to use packages=find_packages(exclude=['doc/*', 'docker/*', 'data/*', 'scripts/*', 'tests/*'])

2. Create an __init__.py file for the nn_modules submodule, and for all submodules you want to include in the final package structured as so:

from . import fnet_nn_2d
from . import fnet_nn_3d

Discovered while trying to implement something similar to the predict.py script in the base directory.

[counkomol]

I believe this should no longer be an issue because __init__.py have been added to relevant submodules.