Drupal 10 compatibility and fix critical logger.factory bug. [Anybody](https://www.drupal.org/u/anybody), [nevergone](https://www.drupal.org/u/nevergone), [LRWebks](https://www.drupal.org/u/lrwebks) **Issues**: 3 issues resolved. Changes since [2.0.6](https://www.drupal.org/project/watchdog_mailer/releases/2.0.6): * [#3337719](https://www.drupal.org/node/3337719) by [Anybody](https://www.drupal.org/u/anybody), [nevergone](https://www.drupal.org/u/nevergone), [LRWebks](https://www.drupal.org/u/lrwebks): Circular reference detected for service "logger.factory" * [#3337314](https://www.drupal.org/node/3337314) by [nevergone](https://www.drupal.org/u/nevergone): Code formatting with Drupal Coding Standards * [#3321350](https://www.drupal.org/node/3321350) by [LRWebks](https://www.drupal.org/u/lrwebks), [Anybody](https://www.drupal.org/u/anybody): Replace README.txt with README.md