`gdnative-doc` allows for an optional `toml` configuration file. The current valid entries are :
- `url_overrides: HashMap<String, String>`:
List of items for which the linking url should be overriden.
- `rename_classes: HashMap<String, String>`:
Renaming of types when going from Rust to Godot.
This is useful because GDNative allows defining a `script_class_name` in the
`.gdns` file.
- `markdown_options: Vec<String>`:
Optional markdown options.
### Valid options
- FOOTNOTES
- SMART_PUNCTUATION
- STRIKETHROUGH
- TABLES
- TASKLISTS
### Default
No option enabled.