MainWP Child 5.4

Added: Support for the new column displaying the child site language as a matching flag.
Added: Support for the new column warning if a child site is not indexable by search engines.
Added: Support for the option to select which data to include in the sync process.
Added: Improved WP Debug Mode status check logic.
Added: Support for the new Regression Testing extension
Updated: Site Hardening checks, removing outdated ones and introducing new ones.