A crate providing macros for creating spans in various detail levels. `coarse!` should be used for top-level operations, whereas
`detail!` should be used in plumbing crates unless their operations are likely to cost a lot of time.
The application is supposed to explicitly turn on tracing via `gix-features`.
Crates that use `gix-features` should use `gix_features::trace`, and those who don't can use `gix_trace` directly.
## Feature Flags