A crate providing a macro to re-export a procedural macro.
This allows for adding additional public items in addition to
re-exported derives. This is unnecessary in Rust edition 2018,
as it's possible to use
pub use syntax for that purpose.
However, this crate still exists for Rust versions before 1.31.
Re-exports a procedural macro so that all its derives are visible publicly while allowing to add additional public items.