Bump to 1.0.3 (#70)

Author: danielen-meli

CHANGELOG.md

@@ -7,3 +7,7 @@ Solution for issue [56](https://github.com/mercadopago/sdk-go/issues/56).
 ## VERSION 1.0.2
 
 Fix `differential_pricing_id` type. Now it is `int` instead of `string`.
+
+## VERSION 1.0.3
+
+Include `sub_merchant` in `ForwardData` in `Payment`.

pkg/internal/httpclient/helper.go

@@ -16,7 +16,7 @@ import (
 )
 
 const (
-	currentSDKVersion string = "1.0.2"
+	currentSDKVersion string = "1.0.3"
 	productID         string = "CNITR48HSRV0CRPT3NI0"
 )