Today version 0.6 beta 7 was release, and with it, you have the option to control particle hair using shapekeys.
You can control several shapekey at the same time to create amazing art and animation.
If you find bugs or have suggestions, please leave a comment or talk with me on twitter
https://twitter.com/carlosedubarret
Download it at:
https://carlosedubarreto.gumroad.com/l/joeyf