Log Message:
gallery-dl: Update to 1.9.0

Changes:
1.9.0
-----
### Additions
- Support for
  - `erolord` (#326)
- Add login support for `instagram` (#195)
- Add `--no-download` and `extractor.*.download` disable file downloads (#220)
- Add `-A/--abort` to specify the number of consecutive download skips before
  aborting
- Interpret `-1` as infinite retries (#300)
- Implement custom log message formats per log-level (#304)
- Implement an `mtime` post-processor that sets file modification times
  according to metadata fields (#332)
- Implement a `twitter.content` option to enable tweet text extraction
  (#333, #338)
- Enable `date-min/-max/-format` options for `tumblr` (#337)

### Changes
- Set file modification times according to their `Last-Modified` header when
  downloading (#236, #277)
    - Use `--no-mtime` or `downloader.*.mtime` to disable this behavior
- Duplicate download URLs are no longer silently ignored (controllable with
  `extractor.*.image-unique`)
- Deprecate `--abort-on-skip`

### Fixes
- Retry downloads on OpenSSL exceptions (#324)
- Ignore unavailable pins on `sexcom` instead of raising an exception (#325)
- Use Firefox's SSL/TLS ciphers to prevent Cloudflare CAPTCHAs (#342)
- Improve folder name matching on `deviantart` (#343)
- Forward cookies to `youtube-dl` to allow downloading private videos
- Miscellaneous fixes for `35photo`, `500px`, `newgrounds`, `simplyhentai`