Update order of code

`Face` is more widely used than `Faces`, so it makes sense to put it
first.

crates/fj-kernel/src/objects/face.rs

@@ -7,54 +7,6 @@ use crate::{builder::FaceBuilder, stores::Stores};
 
 use super::{Cycle, Surface};
 
-/// A collection of faces
-#[derive(Clone, Debug, Default, Eq, PartialEq, Hash, Ord, PartialOrd)]
-pub struct Faces {
-    inner: BTreeSet<Face>,
-}
-
-impl Faces {
-    /// Create an empty instance of `Faces`
-    pub fn new() -> Self {
-        Self::default()
-    }
-
-    /// Find the given face
-    pub fn find(&self, face: &Face) -> Option<Face> {
-        for f in self {
-            if f == face {
-                return Some(f.clone());
-            }
-        }
-
-        None
-    }
-}
-
-impl Extend<Face> for Faces {
-    fn extend<T: IntoIterator<Item = Face>>(&mut self, iter: T) {
-        self.inner.extend(iter)
-    }
-}
-
-impl IntoIterator for Faces {
-    type Item = Face;
-    type IntoIter = btree_set::IntoIter<Face>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        self.inner.into_iter()
-    }
-}
-
-impl<'a> IntoIterator for &'a Faces {
-    type Item = &'a Face;
-    type IntoIter = btree_set::Iter<'a, Face>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        self.inner.iter()
-    }
-}
-
 /// A face of a shape
 #[derive(Clone, Debug, Eq, PartialEq, Hash, Ord, PartialOrd)]
 pub struct Face {
@@ -165,6 +117,54 @@ impl Face {
     }
 }
 
+/// A collection of faces
+#[derive(Clone, Debug, Default, Eq, PartialEq, Hash, Ord, PartialOrd)]
+pub struct Faces {
+    inner: BTreeSet<Face>,
+}
+
+impl Faces {
+    /// Create an empty instance of `Faces`
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    /// Find the given face
+    pub fn find(&self, face: &Face) -> Option<Face> {
+        for f in self {
+            if f == face {
+                return Some(f.clone());
+            }
+        }
+
+        None
+    }
+}
+
+impl Extend<Face> for Faces {
+    fn extend<T: IntoIterator<Item = Face>>(&mut self, iter: T) {
+        self.inner.extend(iter)
+    }
+}
+
+impl IntoIterator for Faces {
+    type Item = Face;
+    type IntoIter = btree_set::IntoIter<Face>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        self.inner.into_iter()
+    }
+}
+
+impl<'a> IntoIterator for &'a Faces {
+    type Item = &'a Face;
+    type IntoIter = btree_set::Iter<'a, Face>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        self.inner.iter()
+    }
+}
+
 /// The handedness of a face's coordinate system
 ///
 /// See [`Face::coord_handedness`].