### Added
* Restored `404.php`.
* Restored `page.php`.
* Restored `search.php`.
* Restored `single.php`.
### Removed
* Removed language files from core while we work on reliability standards.
### Fixed
* Fixed issue where certain child theme styles fail to load. `CHILD_THEME_NAME` is now used (if available) when returning a theme handle (used when enqueueing CSS).