doc: add TODO item for symbol html

TODO.md

@@ -262,17 +262,19 @@
         view: Node<MSG> ,
     }
     ```
-- [ ] remove `SafeHtml` variant in leaf, instead provide a safe_html which is parsed and converted into node
+- [X] remove `SafeHtml` variant in leaf, instead provide a safe_html which is parsed and converted into node
     - using safe html alters the dom tree
-- [ ] remove `innerHTML` func in AttributeValue as it could alter the DOM node tree
+- [ ] add `symbol_html` for html entities such as `&nbsp;` `&gt`, `&lt` etc.
+    - this should be safe to be inserted
+- [X] remove `innerHTML` func in AttributeValue as it could alter the DOM node tree
 - [ ] Keep track of which attributes to be skipped in `SkipDiff{shall:false}`
     ```rust
     enum SkipStrat{
         SkipAll,
         SkippIndex(Vec<usize>),
     }
     ```
-- [ ] Maybe disable the template usage for now
+- [X] Maybe disable the template usage for now
 
 ## Features
 - [X] Storage service (May not be needed since the user can directly use web-sys)

crates/html-parser/src/lib.rs

@@ -51,6 +51,9 @@ pub fn parse_html<MSG>(html: &str) -> Result<Option<Node<MSG>>, ParseError> {
     process_node(doc.get_root_node().borrow().deref())
 }
 
+//TODO: This is not dealing with html symbols such as
+//   `&#9650;`
+//   `&#9660;`
 fn process_node<MSG>(node: &rphtml::parser::Node) -> Result<Option<Node<MSG>>, ParseError> {
     let content = if let Some(content) = &node.content {
         let content = String::from_iter(content.iter());