Merge #951

951: Return DoubleEndedIterator from points and points_mut r=lnicola a=urschrei

Fixes #949

- [x] I agree to follow the project's [code of conduct](https://github.com/georust/geo/blob/main/CODE_OF_CONDUCT.md).
- [x] I added an entry to `CHANGES.md` if knowledge of this change could be valuable to users.
---


Co-authored-by: Stephan Hügel <shugel@tcd.ie>
Co-authored-by: Stephan Hügel <urschrei@gmail.com>

Author: bors[bot]

geo-types/CHANGES.md

@@ -2,6 +2,9 @@
 
 ## unreleased
 
+* Return `DoubleEndedIterator` from `LineString::points` and `LineString::points_mut`
+  * <https://github.com/georust/geo/pull/951>
+
 ## 0.7.8
 
 * Rename `Coordinate` to `Coord`; add deprecated `Coordinate` that is an alias for `Coord`

geo-types/src/geometry/line_string.rs

@@ -208,12 +208,12 @@ impl<T: CoordNum> LineString<T> {
     }
 
     /// Return an iterator yielding the members of a [`LineString`] as [`Coord`]s
-    pub fn coords(&self) -> impl Iterator<Item = &Coord<T>> {
+    pub fn coords(&self) -> impl DoubleEndedIterator<Item = &Coord<T>> {
         self.0.iter()
     }
 
     /// Return an iterator yielding the coordinates of a [`LineString`] as mutable [`Coord`]s
-    pub fn coords_mut(&mut self) -> impl Iterator<Item = &mut Coord<T>> {
+    pub fn coords_mut(&mut self) -> impl DoubleEndedIterator<Item = &mut Coord<T>> {
         self.0.iter_mut()
     }