zope.sqlalchemy update breaks repo (temporary fix in place)

[westbl]

As the title says, the new zope.sqlalchemy version (1.2 and newer) breaks the repo. I attempted to implement the new version but was unable to do so; instead I specified the old version in setup.py in commit c87a75a. It seems to be "fixed", but should be updated in the future.

https://pypi.org/project/zope.sqlalchemy/#id1