chain operator name

[konradekk]

I guess that the chain operator name is pretty well-established, both here and outside the project. Iʼm thinking of possibility to alias it to flatMap, so it would align slightly better with JS API for arrays etc.

See also similar issue with discussion elsewhere.

(Iʼm more used to of instead from for bind operator but thatʼs not a case with JS API.)

[JSMonk]

Hey @konradekk. Thank you for the issue.
I think, I could add an alias too for the chain method to Either and Maybe monads (but not in the Monad interface, because it will break compatibility).