Log Message:
gallery-dl: Update to 1.14.0

Changes:
1.14.0
------
### Additions
 - [imagechest] add new extractor for imgchest.com (#750)
 - [instagram] add `post_url`, `tags`, `location`, `tagged_users`
   metadata (#743)
 - [redgifs] add image extractor (#724)
 - [webtoons] add new extractor for webtoons.com (#761)
 - implement `--write-pages` option (#736)
 - extend `path-restrict` option (#662)
 - implement `path-replace` option (#662, #755)
 - make `path` and `keywords` available in logging messages (#574, #575)

### Changes
 - [danbooru] change default value of `ugoira` to `false`
 - [downloader:ytdl] change default value of `forward-cookies` to `false`
 - [downloader:ytdl] fix file extensions when merging into `.mkv` (#720)
 - write OAuth tokens to cache (#616)
 - use `%APPDATA%\gallery-dl` for config files and cache on Windows
 - use `util.Formatter` for formatting logging messages
 - reuse HTTP connections from parent extractors

### Fixes
 - [deviantart] use private access tokens for Journals (#738)
 - [gelbooru] simplify and fix pool extraction
 - [imgur] fix extraction of animated images without `mp4` entry
 - [imgur] treat `/t/unmuted/` URLs as galleries
 - [instagram] fix login with username & password (#756, #771, #797, #803)
 - [reddit] don't send OAuth headers for file downloads (#729)
 - fix/improve Cloudflare bypass code (#728, #757)
 - reset filenames on empty file extensions (#733)