refactor: derive Default for Filter (clippy)

src/model.rs

@@ -34,7 +34,7 @@ pub struct Tags {
     pub exotic: bool,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub struct Filter {
     pub billable_only: bool,
     pub valid_only: bool,
@@ -42,12 +42,6 @@ pub struct Filter {
     pub exclude_exotic: bool,
 }
 
-impl Default for Filter {
-    fn default() -> Self {
-        Filter { billable_only: false, valid_only: false, chapters: None, exclude_exotic: false }
-    }
-}
-
 impl Filter {
     pub fn accepts(&self, t: &Tags) -> bool {
         if self.billable_only && !t.billable { return false; }