v3.0.0-next.1

This is one of many pre-release versions, made available on npm via preact-cli@next 🎉

First next-tagged release that stems from #445. The shortlist of changes in this version (compared to master/v2.2.1) is the following:

Breaking

• Require Node 8.x as a minimum runtime
• Remove serve command from the CLI
  It will be made available as its own package in the near future.
• Remove watch command's custom SSL handling
  Use webpack-style CLI flags instead:

  $ preact watch --https --key <foo> --cert <bar>
  

• Rename --service-worker flag to --sw

Chores / Refactors

• Replace yargs with sade 😎
• Remove Preact CLI hero/logo
• Refactor commands' setup
• Update & fix all tests 🎉
  • Tests now complete in 30s (down from 7m)
  • TravisCI suite completes in 2m (down from 30m)
• Move check.js into the main CLI binary
  Performs the check before loading any async code

---

There's still lots to be done~! But publishing this is a good start & allows (all of) us to test each step.