Vendor dependencies

Let's see how I like this workflow.

vendor/wasm-bindgen/tests/wasm/comments.rs

@@ -0,0 +1,73 @@
+use wasm_bindgen::prelude::*;
+use wasm_bindgen_test::*;
+
+#[wasm_bindgen(module = "tests/wasm/comments.js")]
+extern "C" {
+    fn assert_comments_exist();
+}
+
+/// annotated function ✔️ " \ ' {
+#[wasm_bindgen]
+pub fn annotated() -> String {
+    String::new()
+}
+
+/// annotated struct type
+#[wasm_bindgen]
+pub struct Annotated {
+    a: String,
+    /// annotated struct field b
+    pub b: u32,
+    /// annotated struct field c
+    #[wasm_bindgen(readonly)]
+    pub c: u32,
+    d: u32,
+}
+
+#[wasm_bindgen]
+impl Annotated {
+    /// annotated struct constructor
+    #[wasm_bindgen(constructor)]
+    pub fn new() -> Self {
+        Self {
+            a: String::new(),
+            b: 0,
+            c: 0,
+            d: 0,
+        }
+    }
+
+    /// annotated struct method
+    pub fn get_a(&self) -> String {
+        self.a.clone()
+    }
+
+    /// annotated struct getter
+    #[wasm_bindgen(getter)]
+    pub fn d(&self) -> u32 {
+        self.d
+    }
+
+    /// annotated struct setter
+    #[wasm_bindgen(setter)]
+    pub fn set_d(&mut self, value: u32) {
+        self.d = value
+    }
+
+    /// annotated struct static method
+    pub fn static_method() {}
+}
+
+/// annotated enum type
+#[wasm_bindgen]
+pub enum AnnotatedEnum {
+    /// annotated enum variant 1
+    Variant1,
+    /// annotated enum variant 2
+    Variant2,
+}
+
+#[wasm_bindgen_test]
+fn works() {
+    assert_comments_exist();
+}