Show proper source in Sentry stack trace

[mitchhentges]

According to Sentry, it's possible to have stack traces properly show original source code/line numbers.

It would be much better than what we have right now, which just looks at the browserified bundle:

[tomitm]

Yeah, you basically need to create a release and upload the source maps through the API.

gulp-sentry-release looks like something we can drop into our gulp tasks.

[tomitm]

Wow, if it wasn't for the awesome breadcrumbs, this exception would've been pretty useless.

[tomitm]

So, I did a little bit of preliminary digging on this.

• We're not actually generating JS sourcemaps right now - surprise! 🎊
• My attempts to generate sourcemaps haven't been working well, possibly because we depend on electron/node's require loading at the moment. Might be related to why Chrome is showing files under (no domain)

Our build might need some work... maybe.