Log Message:
gallery-dl: Update to 1.14.1

Changes:
1.14.1
------
### Additions
 - [furaffinity] add `artist_url` metadata field (#821)
 - [redgifs] add `user` and `search` extractors (#724)

### Changes
 - [deviantart] extend `extra` option; also search journals for sta.sh
   links (#712)
 - [twitter] rewrite; use new interface (#806, #740)

### Fixes
 - [kissmanga] work around CAPTCHAs (#818)
 - [nhentai] fix extraction (#819)
 - [webtoons] generalize comic extraction code (#820)