Released version 4.0.4

• added Iterables
• added Arrays::firstKey(), lastKey()
• added Arrays::filter()
• Arrays::first() & last(): added parameter $else
• Arrays::first() & last(): added parameter $predicate #305
• added Image::getSupportedTypes()
• Arrays: improved phpDoc
• utilizes Random\Randomizer in PHP 8.3
• StaticClass: fixed compatibility with PHP 8.3.2
• Strings::trim() trims unicode spaces and ZWSP (#304)