# 0.1.1
- Always properly `close()` the substream after sending requests and
responses in the `InboundUpgrade` and `OutboundUpgrade`. Otherwise this is
left to `RequestResponseCodec::write_request` and `RequestResponseCodec::write_response`,
which can be a pitfall and lead to subtle problems (see e.g.
https://github.com/libp2p/rust-libp2p/pull/1606).
# 0.1.0
- Initial release.