Version 0.2.4 - Improved autotest handling

Whats new

Throttling file change events

Depending on OS, the autotest feature was a bit eager on starting testruns in buster. This could lead to several consecutive runs even though you might have just made changes to one file.
Autotest now throttles file change events and starts a testrun after a given quiet period.

Picks up changes in buster.js

At the cost of slightly more latency for starting testruns, changes in busterconfig will be picked up on any file change.

Dependencies clean up

Sigar was used in previous versions for process managment. Currently it is only used for testing purposes, so changed dependencies to be test scoped.