Update zope.sqlalchemy to 1.0

[pyup-bot]

There's a new version of zope.sqlalchemy available.
You are currently using 0.7.7. I have updated it to 1.0

These links might come in handy: PyPI | Changelog | Homepage

Changelog

1.0

---

• Add support for Python 3.4 up to 3.6.

• Support SQLAlchemy 1.2.

• Drop support for Python 2.6, 3.2 and 3.3.

• Drop support for transaction < 1.6.0.

• Fix hazard that could cause SQLAlchemy session not to be committed when
  transaction is committed in rare situations. See
  Use a WeakKeyDictionary to store session => status map zopefoundation/zope.sqlalchemy#23

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖