Replace section like twig

[RobinDev]

1. NO Bc Break

2. Be able to have multiple children rendering the same section. Eg :

Actually

<!-- file1.php -->
<?= $this->section('exampleSection') ?>

<?php $this->layout('file1.php') ?>
<!-- file2.php -->
<?= $this->start('exampleSection'))  ?>
<?php sleep(12) ?>
<?php $this->stop() ?>

<?php $this->layout('file2.php') ?>
<!-- file3.php -->
<?= $this->start('exampleSection')) ?>
<?php sleep(8) ?>
<?php $this->stop() ?>

If i render file3.php, i will wait 12 + 8 seconds.

With this fork

<!-- file1.php -->
<?= $this->section('exampleSection') ?>

<!-- file2.php -->
<?= if ($this->start('exampleSection')) { ?>
<?php sleep(12) ?>
<?php } $this->stop() ?>

<!-- file3.php -->
<?= if ($this->start('exampleSection')) { ?>
<?php sleep(8) ?>
<?php } $this->stop() ?>

If i render file3.php, i will wait 8 seconds.

Hope I am enough clear.