Update tests, examples, benches

docs/COMPARISONS.md

@@ -19,7 +19,7 @@ let dag = DagRunner::new();
 let x = dag.add_task(Value(2));
 let y = dag.add_task(Value(3));
 let sum = dag.add_task(Add).depends_on((&x, &y));
-dag.run().await?;
+dag.run(|fut| tokio::spawn(fut).map(Result::unwrap)).await?;
 ```
 
 **dagrs** (Complex: traits + channels + IDs + manual wiring):
@@ -227,7 +227,7 @@ impl Task<String, Bytes> for MyTask {
 let mut dag = Dag::default();
 dag.add_vertex("one", || async move { /* task */ });
 dag.add_edge("one", "two");
-dag.run().await?;
+dag.run(|fut| tokio::spawn(fut).map(Result::unwrap)).await?;
 ```
 
 ### tasksitter (Dynamic Workflows)

docs/CYCLE_PREVENTION.md

@@ -13,7 +13,7 @@ let a = dag.add_task(TaskA);
 let b = dag.add_task(TaskB);
 a.depends_on(b);
 b.depends_on(a);  // Compiles fine...
-dag.run()
+dag.run(|fut| tokio::spawn(fut).map(Result::unwrap))
 ```
 
 **dagx prevents this at compile time:**