This adds the --add-config-file, --add-email-overrides-file options and
as a side effect allows to specify any number of either which will be
applied in order to the respective configuration objects.
Signed-off-by: Nils Philippsen <nils@redhat.com>
This module contains the logic to load default, system-wide and, if
specified, additional configuration files and merges them into two
dictionaries: `config` and `email_overrides`.
Signed-off-by: Nils Philippsen <nils@redhat.com>