Log Message:
py-importlib-resources: updated to 1.3.1

v1.3.1
For improved compatibility, importlib_resources.trees is now imported implicitly.

v1.3.0
Add extensibility support for non-standard loaders to supply Traversable \ 
resources. Introduces a new abstract base class abc.TraversableResources that \ 
supersedes (but implements for compatibility) abc.ResourceReader. Any loader \ 
that implements (implicitly or explicitly) the TraversableResources.files method \ 
will be capable of supplying resources with subdirectory support.
Preferred way to access as_file is now from top-level module. \ 
importlib_resources.trees.as_file is deprecated and discouraged.
Moved Traversable abc to abc module.