Additions
- Support for
- `vanillarock` - https://vanilla-rock.com/ ([#254](https://github.com/mikf/gallery-dl/issues/254))
- `nsfwalbum` - https://nsfwalbum.com/ ([#287](https://github.com/mikf/gallery-dl/issues/287))
- `artist` and `tags` metadata for `hentaicafe` ([238](https://github.com/mikf/gallery-dl/issues/238))
- `description` metadata for `instagram` ([310](https://github.com/mikf/gallery-dl/issues/310))
- Format string option to replace a substring with another - `R<old>/<new>/` ([318](https://github.com/mikf/gallery-dl/issues/318))
Changes
- Delete empty archives created by the `zip` post-processor ([316](https://github.com/mikf/gallery-dl/issues/316))
Fixes
- Handle `hitomi` Game CG galleries correctly ([321](https://github.com/mikf/gallery-dl/issues/321))
- Miscellaneous fixes for `deviantart`, `hitomi`, `pururin`, `kissmanga`, `keenspot`, `mangoxo`, `imagefap`