automatically infer closure arguments

[rmorshea]

I realized that we can use the __closure__ attribute of Python function objects to automatically infer their dependencies. The flake8-idom-hooks plugin might complain if you leverage this inference, but you can always turn off the check if you use this.

This also renames the args parameter for use_effect use_memo and use_callback to dependencies for explicitness. Given that it will be used less frequently the longer name seems appropriate.

• update docs