clean up npm scripts tasks with npm-run-all

[khalillechelt]

Hi this is just a suggestion.

It does not change behavior of the npm scripts tasks but it uses npm-run-all instead of concurrently to run tasks in sequence or in parallel. It makes the scripts just nicer to read.
Also I made the task names more consistent by using colon in task names instead of a dash.

[googlebot]

Thanks for your pull request. It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

📝 Please visit https://cla.developers.google.com/ to sign.

Once you've signed, please reply here (e.g. I signed it!) and we'll verify. Thanks.

---

• If you've already signed a CLA, it's possible we don't have your GitHub username or you're using a different email address. Check your existing CLA data and verify that your email is set on your git commits.
• If you signed the CLA as a corporation, please let us know the company's name.

[khalillechelt]

I signed it.

[googlebot]

CLAs look good, thanks!

[wardbell]

What is the advantage? I already know concurrently. I don't know npm-run-all. I see that the syntax is a little nicer but now I have to stop and vet that package. I'll keep this here for the future but it's not a priority.

Thanks for the suggestion. I'll get to it when I have time.

[khalillechelt]

Hi the advantage is just that the npm scripts tasks stay readable and manageable over time as the amount of tasks grow. That is all 😄

I have been using it for a while in multiple projects and love how it cleans up the tasks.

[wardbell]

Aaargh! Accidentally merged. I'm reverting. Sorry.

[khalillechelt]

haha I was wondering what was going on. all good.

[wardbell]

I created new PR #56 that revives your changes. Now I have to fix the other stuff I broke. Nightmare!

Anyone. Will look again later.

[khalillechelt]

👍 alrighty sorry to hear that you broke stuff. hope the fix will go fast!