Implement displaying breaking changes

addonService.go

@@ -36,18 +36,18 @@ func (a *AddonService) GetLocalVersion(name string) (string, error) {
 	return addon.GetLocalVersion()
 }
 
-func (a *AddonService) UpdateAddon(name string) (addon Addon, err error) {
-	addon, err = a.GetAddon(name)
+func (a *AddonService) UpdateAddon(name string) (hasBreakingChanges bool, err error) {
+	addon, err := a.GetAddon(name)
 	if err != nil {
-		return
+		return false, err
 	}
 	release, err := addon.GetRemoteRelease()
 	if err != nil {
 		return
 	}
-	err = addon.Update(release)
+	hasBreakingChanges, err = addon.Update(release)
 	if err != nil {
 		return
 	}
-	return addon, nil
+	return hasBreakingChanges, nil
 }