v0.12.1

What's Changed

• Fix ClientBuilder::interface() when no TLS is enabled.
• Fix TlsInfo::peer_certificate() being truncated with rustls.
• Fix panic if http2 feature disabled but TLS negotiated h2 in ALPN.
• Fix Display for Error to not include its source error.

New Contributors

• @atouchet made their first contribution in #2193
• @mbme made their first contribution in #2195

Full Changelog: v0.12.0...v0.12.1