v0.3.12

• Avoid time operations that can panic (#599)
• Bump MSRV to Rust 1.49 (#606)
• Fix header decoding error when a header name is contained at a continuation
  header boundary (#589)
• Remove I/O type names from handshake tracing spans (#608)

New Contributors

• @LPardue made their first contribution in #602
• @hikaricai made their first contribution in #589