Log Message:
gallery-dl: Update to 1.6.2

Changes:
1.6.2
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- Added support for:
  - `instagram` - https://www.instagram.com (#134)
- Added support for multiple items on sta.sh pages (#113)
- Added option to download `tumblr` avatars (#137)
- Changed defaults for visited post types and inline media on `tumblr`
- Improved inline extraction of `tumblr` posts (#133, #137)
- Improved error handling and retry behavior of all API calls
- Improved handling of missing fields in format strings (#136)
- Fixed hash extraction for unusual `tumblr` URLs (#129)
- Fixed image subdomains for `hitomi` galleries (#142)
- Fixed and improved miscellaneous issues for `kissmanga` (#20), `luscious`,
  `mangapark`, `readcomiconline`