Add derives

src/ttl.rs

@@ -4,7 +4,7 @@ use serde::Serialize;
 use std::str::FromStr;
 use std::time::Duration;
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
 pub enum RetentionTime {
     Short,
     Medium,