`npm-run-all` to `npm-run-all2`

[Jayllyz]

Hello, npm-run-all is a useful but no longer maintained development dependency.

Proposed Solution

Change npm-run-all to npm-run-all2, a currently maintained and improved fork. The change is as simple as changing npm-run-all to npm-run-all2 in the package.json file, as well as the respective version.