operators-filter now behaves in the absence of filters.
Before, if there was no configured filter, it created a regex that
matched  - and thus skipped - everything.
This is was not the default behavior we wanted.
@@ -15,6 +15,9 @@ def intercept(work_db: WorkDB, config: ConfigDict):
"""
exclude_operators = config.get('exclude-operators')
+ if exclude_operators is None:
+ return
+
re_exclude_operators = re.compile('|'.join('(:?%s)' % e for e in exclude_operators))
for item in work_db.pending_work_items:
