Log Message:
gallery-dl: Update net/gallery-dl to 1.4.0

Changes:
1.4.0
-----
* Added support for:
   - `simplyhentai` (#89)
* Added extractors for
   - `pixiv` search results and followed users
   - `deviantart` search results and popular listings
* Added post-processors to perform actions on downloaded files
* Added options to configure logging behavior
* Added OAuth support for `smugmug`
* Changed `pixiv` extractors to use the AppAPI,
  this breaks `favorite` archive IDs and changes some metadata fields
* Changed the default filename format for `tumblr` and renamed `offset` to
  `num`
* Fixed a possible UnicodeDecodeError during installation (#86)
* Fixed extraction of `mangadex` manga with more than 100 chapters (#84)
* Fixed miscellaneous issues for `imgur`, `reddit`, `komikcast`, `mangafox`
  and `imagebam`