setup.py psycopg2 requirement update

[hanleyel]

Hello,
I believe in your setup.py install_requires variable, 'psycopg2<=2.6.2' (line 46) is throwing an error when running on Anaconda Python 2.7 (which is recommended for this library). I changed it locally to 'psycopg2-binary' and am now able to run the setup.py file without error. Thanks!

[jairomelo]

Maybe this comment come too late, but if it's still helpful I found a workaround to this issue installing the specific version of pyscopg2

pip install "psycopg2>=2.7,2.8"

After that installation runs with only minor issues 😅