Use libs native timeout features instead of a custom solution

[dapplion]

Proper change to fix a necessity for the aragonCLI refactor. I would advise using this solution over https://github.com/aragon/apm.js/pull/43. However for the lack of tests in this library the affected functions should be tested manually in different environments to ensure stability.

The current setTimeout usage was causing a leak that prevented Node.js processes to finalize, keeping the event loop alive for 5 more minutes than necessary.

[0xGabi]

Thanks, will look at it over the weekend and manually test it with a few dependant packages 👍