New functions added on 2020/06/27:
- block_core_latest_posts_migrate_categories
- create_initial_theme_features
- get_registered_theme_feature
- get_registered_theme_features
- register_block_pattern
- register_block_pattern_category
- register_theme_feature
- rest_default_additional_properties_to_false
- unregister_block_pattern
- unregister_block_pattern_category
- wp_opcache_invalidate