TypeError: not enough arguments for format string

[simonw]

Spotted this in Sentry for a deployment of this library:

TypeError: not enough arguments for format string
  File "django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "django_sql_dashboard/views.py", line 281, in dashboard
    return _dashboard_index(
  File "django_sql_dashboard/views.py", line 117, in _dashboard_index
    extracted = extract_named_parameters(sql)
  File "django_sql_dashboard/utils.py", line 72, in extract_named_parameters
    sql % capture

[simonw]

Fixed this in #75.