generate changelog array just for complex fields

sam/templates/http_.tpl

@@ -4,6 +4,8 @@ import (
 	"github.com/pkg/errors"
 )
 
+var _ = errors.Wrap
+
 {foreach $calls as $call}
 func (*{name}) {call.name|ucfirst}(r *{name|lcfirst}{call.name|ucfirst}Request) (interface{}, error) {
 	return nil, errors.New("Not implemented: {name}.{call.name}")

sam/templates/http_structs.tpl

@@ -25,11 +25,14 @@ func ({self} *{name}) Get{field.name}() {field.type} {
 	return {self}.{field.name}
 }
 
-func ({self} *{name}) Set{field.name}(value {field.type}) *{name} {
+func ({self} *{name}) Set{field.name}(value {field.type}) *{name} {{if !$field.complex}
 	if {self}.{field.name} != value {
 		{self}.changed = append({self}.changed, "{field.name|strtolower}")
 		{self}.{field.name} = value
 	}
+{else}
+	{self}.{field.name} = value
+{/if}
 	return {self}
 }
 {/foreach}