sync/waitgroup: initial sync.WaitGroup wrapper with context support (#319)

Reviewed-on: #319
Co-authored-by: Vasiliy Tolstov <v.tolstov@unistack.org>
Co-committed-by: Vasiliy Tolstov <v.tolstov@unistack.org>

broker/options.go

@@ -58,14 +58,14 @@ func NewOptions(opts ...options.Option) Options {
 type PublishOptions struct {
 	// Context holds external options
 	Context context.Context
-	// BodyOnly flag says the message contains raw body bytes
-	BodyOnly bool
 	// Message metadata usually passed as message headers
 	Metadata metadata.Metadata
 	// Content-Type of message for marshal
 	ContentType string
 	// Topic destination
 	Topic string
+	// BodyOnly flag says the message contains raw body bytes
+	BodyOnly bool
 }
 
 // NewPublishOptions creates PublishOptions struct

broker/subscriber.go

@@ -19,8 +19,8 @@ var typeOfError = reflect.TypeOf((*error)(nil)).Elem()
 
 // Is this an exported - upper case - name?
 func isExported(name string) bool {
-	rune, _ := utf8.DecodeRuneInString(name)
-	return unicode.IsUpper(rune)
+	r, _ := utf8.DecodeRuneInString(name)
+	return unicode.IsUpper(r)
 }
 
 // Is this type exported or a builtin?