Log Message:
gallery-dl: Update to 1.8.5

Changes:
1.8.5
-----
### Additions
- Support for
  - `keenspot` (#223)
  - `sankakucomplex` (#258)
- `folders` option for `deviantart` to add a list of containing folders to
  each file's metadata (#276)
- `captcha` option for `kissmanga` and `readcomiconline` to control CAPTCHA
  handling (#279)
- `filename` metadata for files downloaded with youtube-dl (#291)

### Changes
- Adjust `wallhaven` extractors to new page layout:
  - use API and add `api-key` option
  - removed traditional login support
- Provide original filenames for `patreon` downloads (#268)
- Use e-hentai.org or exhentai.org depending on input URL (#278)

### Fixes
- Fix pagination over `sankaku` popular listings (#265)
- Fix folder and collection extraction on `deviantart` (#271)
- Detect "AreYouHuman" redirects on `readcomiconline` (#279)
- Miscellaneous fixes for `hentainexus`, `livedoor`, `ngomik`