Method equals

crates/gitql-core/src/values/date.rs:31–36

(&self, other: &Box<dyn Value>)

    }

    fn equals(&self, other: &Box<dyn Value>) -> bool {
        if let Some(other_date) = other.as_any().downcast_ref::<DateValue>() {
            return self.timestamp == other_date.timestamp;
        }
        false
    }

    fn compare(&self, other: &Box<dyn Value>) -> Option<Ordering> {
        if let Some(other_date) = other.as_any().downcast_ref::<DateValue>() {