Improving the CHANGELOG and docs (#2027)

Author: Pauan

CHANGELOG.md

@@ -22,7 +22,7 @@ Released 2020-03-03.
 * Optional struct fields are now reflected idiomatically in TypeScript.
   [#1990](https://github.com/rustwasm/wasm-bindgen/pull/1990)
 
-* Typed arrays in `js_sys` onw have `get_index` and `set_index` methods.
+* Typed arrays in `js_sys` now have `get_index` and `set_index` methods.
   [#2001](https://github.com/rustwasm/wasm-bindgen/pull/2001)
 
 * The `web_sys::Blob` type has been updated with `arrayBuffer` and `text`
@@ -40,6 +40,12 @@ Released 2020-03-03.
   `#[wasm_bindgen]` annotations instead of expanded code.
   [#2012](https://github.com/rustwasm/wasm-bindgen/pull/2012)
 
+* A new `typescript_type` attribute can be used to specify the TypeScript type
+  for an `extern` type. [#2012](https://github.com/rustwasm/wasm-bindgen/pull/2012)
+
+* It is now possible to use string values with `#[wasm_bindgen]` `enum`s.
+  [#2012](https://github.com/rustwasm/wasm-bindgen/pull/2012)
+
 * A new `skip_tyepscript` attribute is recognized to skip generating TypeScript
   bindings for a function or type.
   [#2016](https://github.com/rustwasm/wasm-bindgen/pull/2016)

examples/guide-supported-types-examples/src/imported_types.rs

@@ -1,5 +1,25 @@
 use wasm_bindgen::prelude::*;
 
+#[wasm_bindgen]
+pub enum NumberEnum {
+    Foo = 0,
+    Bar = 1,
+    Qux = 2,
+}
+
+#[wasm_bindgen]
+pub enum StringEnum {
+    Foo = "foo",
+    Bar = "bar",
+    Qux = "qux",
+}
+
+#[wasm_bindgen]
+pub struct Struct {
+    pub number: NumberEnum,
+    pub string: StringEnum,
+}
+
 #[wasm_bindgen]
 extern "C" {
     pub type SomeJsType;