[436] 0.10.0 increases `npm run dev` build time significantly

I just upgraded to 0.1.0 and noticed that the build time of npm run dev has increased from about 20s to several minutes. For me it hangs on build [==== ] 86% for most of the time.

1. Any ideas what changes could have caused this?
2. What can I try to fix or debug this further. Anyway to profile webpack through Nuxt?

npm run build takes much less time than npm run dev, though I still believe it is longer than it was.

After the dev server starts, changing Vue files causes a quick reload. Changing anything in the API or Nuxt config which restarts the server causes the long wait again though.

This is making is difficult to work on API changes with the new version.

Thanks you for the consideration.