...

Since ConfiForms app version 2.x we publish release notes here 

Version 2.21.0 (dev)

• Introducing Spaces field type. New field type to list Confluence spaces. Although something like is already possible with (limitless) WebService dropdown field, we have decided to make an easier to configure and setup version of the field
• Introducing new field types to help building master-details forms much easier - Smart multi-row and Smart ConfiForms query

Version 2.20.4

• Fixed issue with "base url" when configured to other than root context (submitting forms from custom layouts)

...