[Feature Request] On/Off toggle on main menu or top of default page

[esmoak]

It would be great to have an easy on/off toggle to quickly disable and reenable the blocker.

If I default to only accept calls from my address book, I occasionally need to receive a call from elsewhere but don't want to change my rules for the few minutes I'm waiting.

Thanks.

Edit: An example is if I call a business and someone might return my call from a different number. I can't whitelist a number if I don't know which line they will call from. So, unless there is an on/off, I would end up changing my rules to allow the call.