(GH-3587) - Rename MahApps.Styles.FocusVisualStyle.ButtonSplit to MahApps.Styles.SplitButton.FocusVisualStyle
(GH-3587) - Rename MahApps.Styles.FocusVisualStyle.ButtonSplit to MahApps.Styles.SplitButton.FocusVisualStyle


ye4241/MahApps.Metro,batzen/MahApps.Metro,MahApps/MahApps.Metro