Log Message:
gallery-dl: Update to 1.13.5

Changes:
1.13.5
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### Additions
 - [500px] recognize `web.500px.com` URLs
 - [aryion] support downloading from folders (#694)
 - [furaffinity] add extractor for followed users (#515)
 - [hitomi] add extractor for tag searches (#697)
 - [instagram] add `post_id` and `num` metadata fields (#698)
 - [newgrounds] add extractor for followed users (#684)
 - [patreon] recognize URLs with creator IDs (#711)
 - [twitter] add `reply` metadata field (#705)
 - [xhamster] recognize more URLs (#700)

### Fixes
 - [gelbooru] improve post ID extraction in pool listings
 - [hitomi] fix extraction of galleries without tags
 - [jaiminisbox] update metadata decoding procedure (#702)
 - [mastodon] fix pagination (#701)
 - [mastodon] improve account searches (#704)
 - [patreon] fix hash extraction from download URLs (#693)
 - improve parameter extraction when solving Cloudflare challenges