pub struct Config {
    pub bleed_mm: f64,
    pub page_width_mm: f64,
    pub page_height_mm: f64,
    pub spacing_mm: f64
}

impl Config {
   pub fn load_a4() -> Config {
        Config {
            bleed_mm: 5.0,
            page_width_mm: 297.0,
            page_height_mm: 420.0,
            spacing_mm: 5.0
        }
    }
}
