feat: make Node impl Default and rename NULL to EMPTY

Author: vidhanio

Cargo.toml

@@ -13,4 +13,4 @@ resolver = "2"
     license = "MIT"
     readme = "README.md"
     repository = "https://github.com/vidhanio/html-node"
-    version = "0.1.18"
+    version = "0.2.0"

html-node-core/src/lib.rs

@@ -75,7 +75,7 @@ pub enum Node {
 
 impl Node {
     /// A [`Node::Fragment`] with no children.
-    pub const NULL: Self = Self::Fragment(Fragment {
+    pub const EMPTY: Self = Self::Fragment(Fragment {
         children: Vec::new(),
     });
 
@@ -111,6 +111,12 @@ impl Display for Node {
     }
 }
 
+impl Default for Node {
+    fn default() -> Self {
+        Self::EMPTY
+    }
+}
+
 /// A comment.
 ///
 /// ```html