Bumped the when.js dependency to 3.7.x to avoid a queue-based scheduling bug where synchronous queue operations would cause the queue to grow indefinitely and hang the whole Node process.
Bumped the when.js dependency to 3.7.x to avoid a queue-based scheduling bug where synchronous queue operations would cause the queue to grow indefinitely and hang the whole Node process.

rkaw92/esdf,rkaw92/esdf