derive default instead of doing it manually

src/paragraph/parser/abschnitt.rs

@@ -9,19 +9,13 @@ use crate::paragraph::parser::{
 };
 
 #[derive(Debug, PartialEq)]
+#[derive(Default)]
 pub(crate) struct Abschnitt {
     metadata: HashMap<String, String>,
     pub(crate) cont: bool,
 }
 
-impl Default for Abschnitt {
+
-    fn default() -> Self {
-        Self {
-            metadata: HashMap::new(),
-            cont: false,
-        }
-    }
-}
 
 impl Abschnitt {
     pub(crate) fn parse(n: Node, builder: &mut LawBuilder) -> Abschnitt {