Feature Request: Access Restriction

Hello RMerlin,

At first I want to thank you for your great work. Your firmware is the most stable for my RT-AC66U and updated frequently. Also your support here is excellent. Thanks so much.

But I'm missing one important feature which was the reason why I jumped to Tomato for now:

Could you please implent an "Access Restriction" like the tomato firmware by shibby has?
I need to choose just a few computers for which I want to block some websites.

All I'm able to do for now, with your firmware, is blocking the internet completely for one computer or blocking the website for everyone.
That's not a solution for me, sadly.

I would be really thankful about this feature and participate as beta tester, if needed.

Greetings,
Takoru