template engine?

@PaulD

4. Instead of total deprecation it could be a parser with "drivers", this Phil Sturgeon proposed long time ago. It is a good idea, I think. Template engines has different APIs, a generalization could be made and an uniform API could be provided by CodeIgniter. It would be nice template engine/PHP to be picked up at will, without the need for touching the controllers. Even better it would be if the needed template engine gets detected by the file extension of the loaded view - '.php', '.html.twig', '.blade.php', ...