v8.4

This release completes support for display conditions on question groups!

Another exciting feature is the ability to change the selected theme via the settings panel. The ELMO and NEMO themes are built-in, and making a custom theme is now easier. See the updated documentation. If you already have a custom theme, following the usual upgrade instructions should migrate it to the new system and you should find that 'Custom' is selected in the settings panel under 'Theme'.

This release also ties up some loose ends with skip logic in printable forms and read-only views of questions.

Several bug fixes and code refactors are included as well.

Onward and upward!

Feature #7738: Add support for QingGroup display conditions to form editor
Feature #7822: Ability to change theme in settings panel
Feature #7178: Add skip logic to print form view
Feature #7788: Add skip logic read only mode
Bug #8012: Form End time not recording when Skip Logic is used
Bug #8023: Condition form operator dropdown is empty for some questions
Bug #8059: Report nil error in data method
Design #6677: Smarter operations panel
Refactoring #7790: Conditional logic React refactoring and standard setting