Designate $options arg as being optional

[andrewryantech]

Bonjour :)

Currently code like:

if (extension_loaded('tideways')) {
    tideways_enable(TIDEWAYS_FLAGS_CPU + TIDEWAYS_FLAGS_MEMORY);   // IDE warns about lack of second arg, $options
}

causes the IDE to warn that the required second arg is missing, however reflection indicates that tideways_enable() (version 4.1.2) has no required args:

$function = new ReflectionFunction('tideways_enable');
var_dump($function->getParameters()); // [flags, options]
var_dump($function->getNumberOfRequiredParameters()); // 0

I'm not sure if the default value is empty array or null, as it appears reflection can't provide that info: https://bugs.php.net/bug.php?id=50798, but practically I don't think it will matter.

It would also be great if you could release a stable version on packagist, at the moment this library is tagged as dev-master. My understanding is to release a stable version you need to add a a git tag.