libftrace 0.0.4

Extemely simple function tracer, useful for debugging
Documentation 
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# `libftrace`

[![CI](https://img.shields.io/github/actions/workflow/status/lume-lang/libftrace/release-plz.yml?style=for-the-badge)](https://github.com/lume-lang/libftrace/actions)
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Extemely simple function tracer, useful for debugging.

# Usage

Before diving too deep, you should add the crate to your `Cargo.toml`:

```toml
[dependencies]
libftrace = "^0"
```

Then, add the `#[libftrace::traced]`` attribute to add spanning to a function:
```rs
use libftrace::traced;

#[traced]
fn handle_request(req: Request) {
    // ..
}
```

## Development Usage

Tracing attributes can be expensive for performance, so `ftrace` includes a way to disable it. To disable it, disable the `enable` feature (which is the only default feature):
```toml
[dependencies]
libftrace = { version = "^0", default-features = false }
```

Currently, the dependencies of `ftrace` are still pulled, but there will be no performance cost of using it, while disabled.