recognize vxtwitter URLs

[thatfuckingbird]

Now that fxtwitter.com fell out of favor/shut down, people switched to posting vxtwitter.com links (works the same as fxtwitter did).
I realize this is not a very scalable solution, so if other such sites pop up we might need a better way than just having the regex match them all, but for now it's probably still good enough.

[mikf]

I realize this is not a very scalable solution, so if other such sites pop up we might need a better way than just having the regex match them all, but for now it's probably still good enough.

We could have the TwitterExtractor class inherit from BaseExtractor, which would allow adding additional Twitter "instances" and matching arbitrary domains via config settings, but I don't know if that would be enough either.

Ultimately there should be a way to modify the URL patterns for all sites through some config setting.