Dependency attack specifically targeting ps-tree

[FallingSnow]

One of your dependencies (event-stream) has an injection that specifically targets this package. Update to event-stream to 4.x to remove it. More info: dominictarr/event-stream#116

[indexzero]

FYI ps-tree@1.1.1 locked to event-stream@3.3.4 (which if I read this thread correctly pre-dates the questionable changes).

Thanks to folks for bringing it to my attention: #34