| ⇢ | A | Static_files added | |
| A | ↛ | Static_files removed |
| ⇢ | C | Static_files::serve_static_files() added | |
| ⇢ | A | Static_files::serve_static_file() added | |
| ⇢ | A | Language::set_language() added | |
| B | ↗ | A | Language::fill_required_translation_keys() improved |
| B | ↗ | A | App::execute() improved |
| D | ↛ | Static_files::serve_static_files() removed | |
| A | ↛ | Static_files::serve_static_file() removed |