[Enhancement] Exclude all non-matched option

[Raido0812]

Functionality to Exclude is awesome, but depending on project they might only want to mock a few calls and exclude all others. Perhaps an additional option to allow all non-matched urls to fallback to raw. Similar to fetch-mock's fallbackToNetwork option

[WhatAKitty]

sounds not bad,do you want to pull request for this?

[WhatAKitty]

Down with new version 0.9.0