Currently the asset caching will create a single cache file and never update it. Improve the logic so it checks if the cache file is out of date and if so create a new cache file.
A cache file should be determined as out of date, if any of the files which are contained within it have been updated since the cache files creation date.
A cache file should be determined as out of date, if any of the files which are contained within it have been updated since the cache files creation date.