vendor dependencies with dep

vendor/github.com/go-pg/pg/internal/util.go

@@ -0,0 +1,21 @@
+package internal
+
+import "reflect"
+
+func SliceNextElem(v reflect.Value) reflect.Value {
+	if v.Len() < v.Cap() {
+		v.Set(v.Slice(0, v.Len()+1))
+		return v.Index(v.Len() - 1)
+	}
+
+	elemType := v.Type().Elem()
+
+	if elemType.Kind() == reflect.Ptr {
+		elem := reflect.New(elemType.Elem())
+		v.Set(reflect.Append(v, elem))
+		return elem.Elem()
+	}
+
+	v.Set(reflect.Append(v, reflect.Zero(elemType)))
+	return v.Index(v.Len() - 1)
+}