Add changelog

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 ## Pre-Release
 
+- Introduce new cgp-field constructs [#36](https://github.com/contextgeneric/cgp/pull/36)
+    - Introduce the product type constructs `Cons` and `Nil`.
+    - Introduce the sum type constructs `Either` and `Void`.
+    - Introduce the `Field` type for tagged field value.
+    - Introduce the `Product!` macro for building product types.
+    - Introduce the `product!` macro for building product expressions.
+    - Introduce the `Sum!` macro for building sum types.
+    - Change the `symbol!` macro to generate product type of `Char` using `Cons` and `Nil`.
+
 - Rename `HasField::Field` to `HasField::Value` - [#35](https://github.com/contextgeneric/cgp/pull/35)
 
 - Remove `Sized` constraint from `Async` trait - [#34](https://github.com/contextgeneric/cgp/pull/34)

crates/cgp-field-macro-lib/src/product.rs

@@ -9,7 +9,7 @@ pub struct ParsePunctuated<T>(pub Punctuated<T, Comma>);
 
 impl<T: Parse> Parse for ParsePunctuated<T> {
     fn parse(input: ParseStream) -> syn::Result<Self> {
-        let types = Punctuated::parse_terminated(&input)?;
+        let types = Punctuated::parse_terminated(input)?;
         Ok(ParsePunctuated(types))
     }
 }