Add "extra" dependencies to package

[fccoelho]

We need to make some dependency optional, to minimize the dependencies on a simple install of the package.

I suggest the first extras should be called "ML"

[tool.poetry.extras]
ML = ["ngboost", "pymc","tensorflow", "scikit-learn", "arviz", "joblib"]

and of courses these packages should be removed from [tool.poetry.dependencies] With this, the user can install the extra "ML" packages with the following command:

pip install epigraphhub[ML]

Other groups can be added later.

A consequence of this is that the imports of these packages in the library must be wrapped in try/except clauses, and when functions requiring these packages are called, they must check if the package is installed, and if not, return a message to the user, saying that she needs to install the extra dependencies.

[luabida]

Reminder: Talking about tests scope, one possibility is to add these deps in the __init__.py inside a try except block with a warning

[Kd-Here]

Can I give here a try?

[luabida]

@Kd-Here Sure :)

[github-actions[bot]]

Stale issue message