Built-in plugins/config files should still be locatable, even if
$FUNPACK_CONFIG_DIR is set. Therefore, multiple candidate config directories need to be searched when trying to locate a config/plugin file.
funpack merge request
Unless the maintainer is being sloppy, this merge request will not be accepted unless the following criteria are met:
Unit tests pass
Version number in
funpack/__init__.pyupdated according to Semantic Versioning conventions