Primitive readable measure helpers.

The helpers here focus on character-count estimates, not a full text layout engine.

Examples

use use_measure::{Measure, characters_per_line, container_width_for_measure, is_readable_measure};

let measure = Measure::new(66.0).unwrap();

assert_eq!(measure.characters_per_line(), 66.0);
assert!(measure.is_readable());
assert_eq!(characters_per_line(528.0, 8.0).unwrap(), 66.0);
assert_eq!(container_width_for_measure(66.0, 8.0).unwrap(), 528.0);
assert!(is_readable_measure(66.0).unwrap());