Revert "Merge pull request #41 from ASCIT/dqu123/marketplace_2to3"
Revert "Merge pull request #41 from ASCIT/dqu123/marketplace_2to3"

This reverts commit 2202715f2c2bfd2fcdd26c7cb8ea71dbd0fa7bef, reversing
changes made to 4b6de58b0f72ac13d442b4aadf32b77dc8ea8389.

ASCIT/donut,ASCIT/donut-python,ASCIT/donut,ASCIT/donut-python,ASCIT/donut