v0.9.0

This release adds support for a customFields configuration option, which extends the gatsby-plugin-sanity-image generated fragments. The primary use case for this is to include additional fields from custom image types across all uses of the fragments, such as alt text.

This release also sees an update to the way browser-targeted files are bundled, including an update to the feature target (es2018) and with minification now being applied. This should reduce the weight of the bundled files being delivered to the browser somewhat.