Need to timeout requests

[Andrew Pearson]

Requests should not be allowed to take forever

[Paul Wieland]

This pattern might work: caolan/async#247 (comment)
Nevermind - I think this only works for items which are pending processing.

[Andrew Pearson]

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/race

This looks like the best way to achieve this

[Paul Wieland]

So each task in the async queue would become a race between the insteon command and a timeout timer?

[Andrew Pearson]

Correct

[Andrew Pearson]

Commits:
ceaaabb
c294d62

Should implement timeouts for the modem and Insteon devices