zaicruvoir1rominet

Following functions - with docstrings and tests - have been created in ``libcst.helpers``: - ``get_node_fields`` - ``is_whitespace_node_field`` - ``is_syntax_node_field`` - ``get_field_default_value`` - ``is_default_node_field`` - ``filter_node_fields`` All above functions are now...

*(Please check the tests ; I was not really sure how to properly cover use cases, so do tell if work needs to be done there)*