Report stack traces in AppVeyor builds that crash Electron

[smashwilson]

It'd be a big help to be able to collect stacktraces from builds in AppVeyor where we crashed the renderer. That's a little tricky to do, though.

The major obstacle that I had to just doing this was that I'm not sure where we can get the symbols for Atom/Electron and/or nsfw so that the traces will be useful.

• relevant stackoverflow question

[annthurium]

@smashwilson, is this still a problem?

[smashwilson]

Nah. It turns out that Windows crash dumps can really easily include stuff like sensitive environment variables, so we decided not to do it. And then with a few nsfw PRs and the @atom/watcher work we haven't seen nearly as many native crashes so it became less important.