chore: checkpoint before Python removal

vendor/http-body-util/CHANGELOG.md

@@ -0,0 +1,30 @@
+# v0.1.3
+
+- Add `Channel`, a body type backed by an async channel.
+- Make `Empty::new()` to be `const fn`.
+
+# v0.1.2
+
+- Add `BodyDataStream` type to convert a body to a stream of its data.
+
+# v0.1.1
+
+- Add `BodyExt::with_trailers()` combinator.
+- Improve performance of `BodyExt::collect().to_bytes()`.
+
+# v0.1.0
+
+- Update `http` to 1.0.
+- Update `http-body` to 1.0.
+
+# v0.1.0-rc.3
+
+- Fix `BodyExt::collect()` from panicking on an empty frame.
+
+# v0.1.0-rc.2
+
+- Update to `http-body` rc.2.
+
+# v0.1.0-rc.1
+
+- Initial release, split from http-body 0.4.5.