use serdes rename_all

battlesnake/src/main.rs

@@ -16,18 +16,15 @@ mod logic;
 // See https://docs.battlesnake.com/api
 
 #[derive(Debug, PartialEq, Eq, Hash, Clone, Copy, Deserialize, Serialize, Sequence)]
+#[serde(rename_all = "lowercase")]
 pub enum Direction {
     /// Move left (-x)
-    #[serde(rename = "left")]
     Left,
     /// Move up (+y)
-    #[serde(rename = "up")]
     Up,
     /// Move right (+x)
-    #[serde(rename = "right")]
     Right,
     /// Move down (-y)
-    #[serde(rename = "down")]
     Down,
 }