use black format all files;

remove "return state" for functions which will be executed in vmap;
recover randkey as args in mutation methods

tensorneat/examples/with_evox/ray_test.py

@@ -0,0 +1,5 @@
+import ray
+ray.init(num_gpus=2)
+
+available_resources = ray.available_resources()
+print("Available resources:", available_resources)