This is a 🐛 

When I was trying to add the faviconTag to the document I found this bug. I created a `faviconNode`, called `createEdge()` inside it, then the graph's change event was emited, then it [emits the compiler's change event](https://github.com/choojs/bankai/blob/master/index.js#L56) immediately, but at this moment, [compiler's change event](https://github.com/choojs/bankai/blob/master/lib/cmd-build.js#L47) has not yet been listened.

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## Checklist
<!-- Remove items that do not apply. For completed items, change [ ] to [x]. -->
- [x] tests pass
- [ ] tests and/or benchmarks are included
- [ ] documentation is changed or added

## Context
No

## Semver Changes
minor