Is there any way to do this natively yet (ie. without using a plugin)? I'm hoping there's native support similar to the way the old MVC Override plugin allowed class overrides using a /code folder in the templates directory (much like how template HTML overrides currently work). All the documentation on it is fairly out of date so I figured it's worth asking, but I'm sure I'm out of luck.
All I want to do is swap out a few items on the quickicons module and I need to override its helper class to do so - writing a system plugin or having to make a custom version of the module seems a touch overkill.