Welcome, PHP 7.1!

All familiar functions and interfaces, but with iterable type hints all over the place.

As a consequence, Pipeline\take() can now take not only iterators, but plain old arrays too. Arrays are handled eagerly, which is a point to keep in mind. For example:

$foo = take([0, 0, 1, 2, 3])->filter();
// at this point $foo contains exactly [1, 2, 3]

Also because of that Pipeline\fromArray() became useless and is tagged for deprecation in favour of take(). Still available for API compatibility.

Speaking of API compatibility, all previous code should work just as fine.