Hello,

This is quite a great library and works flawlessly, but I noticed a minor issue, which might be related to the way I use it.

Instead of using composer, I've integrated a version of the library in my source and load it using
require_once('closure/autoload.php');

Now, autoload.php has require_once 'functions.php'; which depending on the caller script location (and thus working directory), sometimes tries to load another functions.php from my project, because it does not specify a location. Shouldn't this become require_once __DIR__.'/functions.php' to make sure the proper one is required? Or would this conflict with Composer or some other intended way of usage?

Thank you.