transforms 1.4.1

A transform library to track reference frames and provide transforms between them.
Documentation 
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#[cfg(test)]
mod timestamp_tests {
    use crate::{errors::TimeError, time::Timestamp};
    use approx::assert_relative_eq;

    #[test]
    fn creation() {
        let _ = Timestamp { t: 1 };
    }

    #[test]
    fn ordering() {
        let t1 = Timestamp { t: 1 };
        let t2 = Timestamp { t: 2 };
        let t3 = Timestamp { t: 2 };

        assert!(t1 < t2);
        assert!(t2 > t1);
        assert!(t2 == t3);
        assert!(t2 >= t1);
        assert!(t1 <= t2);
    }

    #[test]
    fn as_seconds() {
        let timestamp = Timestamp { t: 1_500_000_000 };
        assert_relative_eq!(timestamp.as_seconds().unwrap(), 1.5);

        let timestamp = Timestamp { t: 0 };
        assert_relative_eq!(timestamp.as_seconds().unwrap(), 0.0);

        let timestamp = Timestamp { t: 1_000_000_000 };
        assert_relative_eq!(timestamp.as_seconds().unwrap(), 1.0);
    }

    #[test]
    fn as_seconds_accuracy_loss() {
        let timestamp = Timestamp { t: u128::MAX - 1 };
        assert!(matches!(
            timestamp.as_seconds(),
            Err(TimeError::AccuracyLoss)
        ));
    }
}