add trimming option for the de::from_* functions

Author: Arthur Pigeon

examples/read_nodes_serde.rs

@@ -2,7 +2,7 @@
 // run example with:
 //    cargo run --example read_nodes_serde --features="serialize"
 
-use quick_xml::de::from_str;
+use quick_xml::de::{from_str, Trimmer};
 use serde::Deserialize;
 
 #[derive(Debug, PartialEq, Default, Deserialize)]
@@ -66,12 +66,12 @@ const ONE_TRANSLATION_XML: &str = r#"
 "#;
 
 fn main() -> Result<(), quick_xml::DeError> {
-    let t: Translation = from_str(ONE_TRANSLATION_XML)?;
+    let t: Translation = from_str(ONE_TRANSLATION_XML, Trimmer::default())?;
     assert_eq!(t.tag, "HELLO");
     assert_eq!(t.lang, "ja");
     assert_eq!(t.text, "こんにちは");
 
-    let config: Config = from_str(XML)?;
+    let config: Config = from_str(XML, Trimmer::default())?;
     dbg!("{:?}", &config);
 
     assert_eq!(config.settings.language, "es");