impl default for canvas cache

[robjtede]

Previously needed to write the full Default implementation:

#[derive(Debug)]
pub struct AppState {
    all_data: State,
    current_frame_data: D,
    current_frame_canvas_cache: canvas::layer::Cache<D>,
}

impl Default for AppState {
    fn default() -> Self {
        Self {
            all_data: Default::default(),
            current_frame_data: Default::default(),
            current_frame_canvas_cache: iced::widget::canvas::layer::Cache::new(),
        }
    }
}

Now deriving a default application state is possible:

#[derive(Debug, Default)]
pub struct AppState {
    all_data: State,
    current_frame_data: D,
    current_frame_canvas_cache: canvas::layer::Cache<D>,
}

[hecrj]

Awesome 🎉 Thank you!