tracing-serde 0.1.3

This release adds experimental support for recording structured field
values using the valuable crate. See this blog post for
details on valuable.

Note that valuable support currently requires --cfg tracing_unstable. See the documentation for details.

Added

• valuable: Experimental support for serializing user-defined types using
  valuable and valuable-serde (#1862)
• Support for serializing f64 values (#1507)

Fixed

• Fixed incorrect size hint in SerializeFieldSet (#1333)
• A number of documentation fixes

Thanks to @akinnane and @maxburke for contributing to this release!