be able to update data individually; Fixes #952

src/model/trip.rs

@@ -47,7 +47,7 @@ pub struct TripUpdate<'a> {
     pub is_locked: bool,
 }
 
-impl<'a> TripUpdate<'a> {
+impl TripUpdate<'_> {
     fn cancelled(&self) -> bool {
         self.max_people == -1
     }