Vendor dependencies

Let's see how I like this workflow.

vendor/wasm-bindgen-macro/ui-tests/unused-attributes.stderr

@@ -0,0 +1,41 @@
+error: unused variable: `method`
+ --> ui-tests/unused-attributes.rs:9:20
+  |
+9 |     #[wasm_bindgen(method)]
+  |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_method`
+  |
+note: the lint level is defined here
+ --> ui-tests/unused-attributes.rs:1:9
+  |
+1 | #![deny(unused_variables)]
+  |         ^^^^^^^^^^^^^^^^
+
+error: unused variable: `getter`
+  --> ui-tests/unused-attributes.rs:18:16
+   |
+18 | #[wasm_bindgen(getter, typescript_custom_section)]
+   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_getter`
+
+error: unused variable: `readonly`
+  --> ui-tests/unused-attributes.rs:21:16
+   |
+21 | #[wasm_bindgen(readonly)]
+   |                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_readonly`
+
+error: unused variable: `getter_with_clone`
+  --> ui-tests/unused-attributes.rs:24:16
+   |
+24 | #[wasm_bindgen(getter_with_clone, final)]
+   |                ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_getter_with_clone`
+
+error: unused variable: `final`
+  --> ui-tests/unused-attributes.rs:24:35
+   |
+24 | #[wasm_bindgen(getter_with_clone, final)]
+   |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_final`
+
+error: unused variable: `typescript_type`
+  --> ui-tests/unused-attributes.rs:26:28
+   |
+26 |     #[wasm_bindgen(getter, typescript_type = "Thing[]")]
+   |                            ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_typescript_type`