[suggestion]Update pipy version

The current version 0.0.4 (pipy) has an annoying issue in shop_simplevariations/views.py:20 where anonymous users looses client_id from session when shopping for the first time. 
This was fixed in commit 6b16f65e1b7f80dfa712669c48a9400e36c3392c .
It was a little difficult to find out the root cause of this behavior for me, and it is already fixed.

What do you think in releasing a new version?