//! # OpenTelemetry Contrib
//!
//! This is a library for extensions that are not part of the core API, but still may be useful for
//! some users.
//!
//! Typically, those include vendor specific propagators.
//!
//! ## Crate Feature Flags
//!
//! The following crate feature flags are available:
//!
//! * `binary-propagator`: Adds Experimental binary propagator to propagate trace context using binary format.
//! * `base64-format`: Enables base64 format support for binary propagators.