removing fromIndex arguments.

[xgbuils]

includes and indexOf has fromIndex arguments which don't make sense.

In Array approach it is useful to have better performance. But in lazy approach doing iterum.drop(fromIndex).includes(...) is the same.

[xgbuils]

Notice that iterum.indexOf(n, fromIndex) does not returns the same that iterum.drop(fromIndex).indexOf(n).

However it's easy to create an snippet which obtains the same:

const result1 = iterum.indexOf(n, fromIndex)

const x = iterum.drop(fromIndex).indexOf(n)
const result2 = x === -1 ? -1 : fromIndex + x

// result1 === result2

Then, I'm also going to remove fromIndex of indexOf method.

[xgbuils]

I've noticed that lodash/fp has indexOfFrom function. I'm also going to implement this method