Install fails with Python 2 because of more-itertools version

[nezda]

Attempting to install from current master source on a machine with python 2 with sudo python setup.py install fails with

  File "/tmp/easy_install-Vd6lIV/more-itertools-8.2.0/more_itertools/more.py", line 480
    yield from iterable
             ^
SyntaxError: invalid syntax

Pinning more-itertools by adding more-itertools==5.0.0; python_version <= '2.7' after

pg_view/requirements.txt

Line 2 in de5325a

psycopg2

worked for me