handle length of filenames #8

OSError: [Errno 36] File name too long: 'lumbung.space/lumbung.space-web/content/posts/pixelfed.social/the-town-of-kalkar-is-located-on-the-lower-lower-rhine-in-the-northwest-of-north-rhine-westphalia-kalkar-which-was-founded-in-1230-and-presumably-received-city-rights-in-1242-is-characterized-in-particular-by-a-medieval-townscape-it-reminds-me-very-much-of-the-small-towns-in-belgium-the-town-hall-on-the-market-square-photo-2-and-the-town-windmill-photo-4-are-particularly-beautiful-it-is-the-largest-windmill-27-5-m-cap-height-25-m-blade-diameter-8-floors-on-the-lower-rhine-and-was-built-in-1770-71-i-was-there-for-two-days-to-celebrate-20-years-of-friendship-with-a-close-friend-of-mine'