This closes #72, update outdated Rust extern crate macro for importing dependencies (#84)

- Update unit tests

Author: matthiasbeyer

genRust.go

@@ -109,10 +109,8 @@ func (gen *CodeGenerator) GenRust() error {
 		return err
 	}
 	defer f.Close()
-	extern := `#[macro_use]
-extern crate serde_derive;
-extern crate serde;
-extern crate serde_xml_rs;
+	var extern = `use serde::Serialize;
+use serde::Deserialize;
 
 use serde_xml_rs::from_reader;`
 	source := []byte(fmt.Sprintf("%s\n\n%s\n%s", copyright, extern, gen.Field))

test/rs/base64.xsd.rs

@@ -1,9 +1,7 @@
 // Code generated by xgen. DO NOT EDIT.
 
-#[macro_use]
-extern crate serde_derive;
-extern crate serde;
-extern crate serde_xml_rs;
+use serde::Serialize;
+use serde::Deserialize;
 
 use serde_xml_rs::from_reader;