Merge branch 'fixes' into common-neighbors

src/maps.rs

@@ -141,9 +141,10 @@ impl<E: Copy, T: Clone> IndexMut<E> for ElementMap<E, T> {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use std::rc::Rc;
 
+    use super::*;
+
     #[test]
     fn initial_values_are_default() {
         let map = ElementMap::new(42, |e| e, 6);