Components being bundled together incorrectly

[jgw96]

Stencil version:

 Started happening with `@stencil/core@0.5.0-2`

I'm submitting a:

• bug report
• feature request
• support request => Please do not submit support requests here, use one of these channels: https://forum.ionicframework.com/ or https://stencil-worldwide.slack.com

Current behavior:

Using my stencil-beer PWA as an example, the auth-page bundle ends up containing all of the routed components in the app. After discussing this today with Adam, this is happening because our automatic bundling logic is reading stencil-routes when it shouldn't be.

Expected behavior:

auth-page would be in its own bundle as it does not reference any other components in the app

Steps to reproduce:

1. Pull down https://github.com/jgw96/stencil-beer
2. npm install @stencil/core@0.5.0 --save-exact
3. do a dev or prod build (dev build makes it easier to see) with --stats turned on

Related code:

// insert any relevant code here

Other information: