Migrating from PHP 8.0.x to PHP 8.1.x

Added ReturnTypeWillChange attribute to silence deprecation notice.

Renamed everything to Caching Generator

For consistency with the CachingIterator, this class was renamed to CachingGenerator

Made internal attributes/functions private & added getCache method.

For compatibility with the SPL CachingIterator class, the method ->getCache() was added. Since the cache and the generator are now both exposed via public methods, the internal attributes (and an internal helper method) have been made private.

CachedGenerator now implements OuterIterator

CachedGenerator now implements OuterIterator.

Fixed README composer instructions

Fixed README composer instructions.

Initial release

Working version of PHP Cached Generator.