- `date` metadata fields for `pixiv` ([#248](https://github.com/mikf/gallery-dl/issues/248)), `instagram` ([#250](https://github.com/mikf/gallery-dl/issues/250)), `exhentai`, and `newgrounds`
### Changes
- Improved `flickr` metadata and video extraction ([#246](https://github.com/mikf/gallery-dl/issues/246))
### Fixes
- Download original GIF animations from `deviantart` (#242)
- Download original GIF animations from `deviantart` ([#242](https://github.com/mikf/gallery-dl/issues/242))
- Ignore missing `edge_media_to_comment` fields on `instagram` ([#250](https://github.com/mikf/gallery-dl/issues/250))
- Fix serialization of `datetime` objects for `--write-metadata` ([#251](https://github.com/mikf/gallery-dl/issues/251), [#252](https://github.com/mikf/gallery-dl/issues/252))
- Allow multiple post-processor command-line options at once ([#253](https://github.com/mikf/gallery-dl/issues/253))
- Prevent crash on `booru` sites when no tags are available ([#259](https://github.com/mikf/gallery-dl/issues/259))
- Fix extraction on `instagram` after `rhx_gis` field removal ([#266](https://github.com/mikf/gallery-dl/issues/266))
- Avoid Cloudflare CAPTCHAs for Python interpreters built against OpenSSL <1.1.1