Release of v5.1.1-beta4

Fix the FieldXML interface mismatch. #1228. Adds Initialize, Reset, and Push functionality to the Repository entities.

admin/assets/js/initialization_selection.js

@@ -166,6 +166,7 @@ class InitializationManager {
 		const powers = [
 			'Joomla.Fieldtype',
 			'Joomla.Power',
+			'Repository',
 			'Power'
 		];