`ModuleNotFoundError: No module named 'decontext'` trying to import `CoreRecipe`

[eugene-graft]

Hi! First of all, thank you for the white paper and the library. The concept of layers is interesting. It's a smart way to represent a document for different purposes.

Unfortunately, I face an issue trying to follow the steps from the README. Steps to reproduce:

1. pip install -U papermage
2. ipython
3. from papermage.recipes import CoreRecipe => ModuleNotFoundError: No module named 'decontext'

Installing the latest version from the source code fixes the issue.