Remove remote fetching and analyzing?

[devinrhode2]

I don't like the idea of TraceKit making a request for my js file to provide lines of context when it's almost no different than just getting the straight line number of the error.

I'm proposing we remove all operations dealing with requesting a remote file and analyzing it.

Related to #11, testing becomes tricky

[devinrhode2]

What do you think @airportyh?

[airportyh]

But from what I understand, remote source fetching is a big component of TraceKit. It is what makes stacktraces work in IE, for example, which I think is actually very nifty.

[airportyh]

Oh, and I just realized this won't help the fact that evaling breaks stacktraces - no location or lineno info.

[occ]

Remote fetching is an important part of tracekit. I don't think removing it would be a good idea. I do support having/improving the "do not fetch" flag though.