Update some imports

src/urlencoded/ser/pair.rs

@@ -1,8 +1,6 @@
-use std::borrow::Cow;
-use std::mem;
+use std::{borrow::Cow, mem};
 
 use serde::ser;
-
 use url::form_urlencoded::{
     Serializer as UrlEncodedSerializer, Target as UrlEncodedTarget,
 };

src/urlencoded/ser/part.rs

@@ -3,6 +3,7 @@ use std::str;
 use serde::ser;
 
 use crate::urlencoded::error::Error;
+
 pub struct PartSerializer<S> {
     sink: S,
 }