Upgrade Pillow to 5.2.0

[mihow]

Can we also add Pillow for Python 3.6?

[Cai-zj]

I need him too ,Pillow for Python 3.6 or 3.7

[jackdh]

+1

[Cai-zj]

+1
hope this helps .
ryfeus/lambda-packs#33