Merge pull request #100 from shepmaster/increase-edition

Bump to edition 2021

Author: shepmaster

Cargo.toml

@@ -2,7 +2,7 @@
 name = "sxd-document"
 version = "0.3.2"
 authors = ["Jake Goulding <[email protected]>"]
-edition = "2018"
+edition = "2021"
 rust-version = "1.56"
 
 description = "A Rust XML DOM library"