Add and resolve an obscene amount of lints

src/types.rs

@@ -1,6 +1,7 @@
-use serde::{Serialize, Deserialize};
 use std::collections::HashMap;
 
+use serde::{Serialize, Deserialize};
+
 #[derive(Serialize, Deserialize, Clone, Default, PartialEq, Eq, Debug)]
 pub struct Graph {
     pub nodes: HashMap<String, Node>,
@@ -40,10 +41,7 @@ impl Graph {
     }
 
     pub fn get_root(&self) -> Option<Node> {
-        match self.nodes.get(&self.root_node) {
-            Some(n) => Some(n.clone()),
-            None => None,
-        }
+        self.nodes.get(&self.root_node).cloned()
     }
 }