Elements RTL, introduced in Elements 9.1 supersedes and replaces Sugar. Applications using Sugar should port over to Elements RTL easily, since many APIs are the same or similar. We will continue so ship and support Sugar, but we will not extend it with new classes or features, and Sugar will not be updated with coverage for Island.
We recommend using Elements RTL for new projects, instead of Sugar.
Sugar classes are distributed between the following namespaces, with most common and base classes being in the root Sugar namespace: