this library is compatible with SQLAlchemy 1.4 branch on Python 2.7

[jvanasco]

We still keep an open-source project backwards compatible to Python2.7, and noticed this on a recent test failure:

https://github.com/zopefoundation/zope.sqlalchemy/blob/master/setup.py#L54

This library is still fully functional on Python2.7 with SQLAlchemy 1.4.7+

IMHO, it is worth supporting this combination, as a goal of the 1.4 branch of SQLAlchemy is to help legacy Python2 projects upgrade to Python3 and SQLAlchemy 2.0.

[icemac]

@jvanasco Dropping support for SQLAlchemy 1.4 at Python 2.7 does not seem to be necessary. This restriction was probably added because SQLAlchemy 1.4 does not support Python 3.5 any more.

I'll give it a try.

[jvanasco]

Thanks. The history suggested this was unintentionally dropped out when 3.5 was deprecated.

[icemac]

I just released https://pypi.org/project/zope.sqlalchemy/1.6/ including this fix.

[jvanasco]

Thank you kindly!