multierror and multilogger cleaned up.

multierr/doc.go

@@ -25,7 +25,7 @@ Example:
 		}
 
 		if errs != nil && len(errs) != 0 {
-			// err now contains multiple errors presented as a single error.
+			// err now contains multiple errors presented as a single error interface.
 			err = multierr.NewErrors(errs...)
 		}
 	}
@@ -50,7 +50,12 @@ MultiError also has a shorthand, making the above much less verbose:
 				}
 			}()
 		}
-		// multierror now contains any/all errors above.
+
+		// multierror now contains any/all errors above. If calling in a function, you'll probably want to do:
+		// if !multierror.IsEmpty() {
+		//		err = multierror
+		// }
+
 	}
 
 In the above, the multierror assignment can still be used as an error.