curried io instances and handler instances

[guillaumearm]

instead of replace arguments when we apply several times an io or a handler instance :

const list = (...args) => args;
io(list)(1, 2, 3)(4, 5, 6)(7)(8)(9).run() // => [1, 2, 3, 4, 5, 6, 7, 8, 9]

[guillaumearm]

finally, I think override behavior is better