chore: bump crate to 0.2.3, update CHANGELOG

examples/tracing_example.rs

@@ -72,8 +72,7 @@ async fn main() {
     // Use RUST_LOG environment variable to control log level
     fmt()
         .with_env_filter(
-            EnvFilter::try_from_default_env()
-                .unwrap_or_else(|_| EnvFilter::new("dagx=info")),
+            EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("dagx=info")),
         )
         .init();