Use the publish date of the RSS item as mtime of the file

[bl00dy1837]

I use ranger for viewing and I want to sort the news by publish date. newest item first :)

-rw-rw-rw- 1 xxx users 195 Nov 29 17:03 'Brightest supermoon since 1948' -rw-rw-rw- 1 xxx users 249 Nov 29 17:03 'Cell phones, screens are keeping your kid awake' -rw-rw-rw- 1 xxx users 254 Nov 29 17:03 "Driverless 'Roborace' car makes street track debut" -rw-rw-rw- 1 xxx users 207 Nov 29 17:03 'Flying a sports car with wings'