Notes for c5.6 Users
If you were a user of the legacy concrete5.6 version of Universal Content Puller in the Legacy Marketplace (now closed), this implementation for the latest concrete5 is a complete redevelopment that also incorporates aspects of the legacy Blocks By AJAX.
This version of UCP has a new clean workflow of Source->Transform->Display->[Cache]->View. As with the old UCP, it uses a pluggable architecture for Source, Transform and Display. Many more plugins are shipped with the core of UCP. You don't need another addon for AJAX, sophisticated AJAX capabilities are built in. If you can pull it, you can AJAX it!
Built for the latest concrete5 core, this new version of UCP is not compatible with the old plugin addons in the legacy marketplace. Like any legacy addon, trying to install them on a current concrete5 core will break your site.