Description of problem:
pg_view 1.3 does not work with postgresql 9.6

Version-Release number of selected component (if applicable):
pg_view-1.3.0-4.fc26.noarch

How reproducible:
Steps to Reproduce:
1. Install postgres 9.6 via dnf and set it up
2. dnf install pg_view
3. su - postgres
4. pg_view

Actual results:
# su - postgres
-bash-4.4$ pg_view 
Traceback (most recent call last):
  File "/usr/bin/pg_view", line 3432, in main
    loop(collectors, consumer, groups, output_method)
  File "/usr/bin/pg_view", line 2748, in loop
    curses.wrapper(do_loop, groups, output_method, collectors, consumer)
  File "/usr/lib64/python3.6/curses/__init__.py", line 94, in wrapper
    return func(stdscr, *args, **kwds)
  File "/usr/bin/pg_view", line 2816, in do_loop
    process_single_collector(st)
  File "/usr/bin/pg_view", line 2845, in process_single_collector
    st.refresh()
  File "/usr/bin/pg_view", line 1187, in refresh
    stat_data = self._read_pg_stat_activity()
  File "/usr/bin/pg_view", line 1408, in _read_pg_stat_activity
    """)
  File "/usr/lib64/python3.6/site-packages/psycopg2/extras.py", line 223, in execute
    return super(RealDictCursor, self).execute(query, vars)
psycopg2.ProgrammingError: column "waiting" does not exist
LINE 8:                            waiting,
                                   ^


Expected results:
pg_view works

Additional info:
Upstream bug:
https://github.com/zalando/pg_view/issues/68

Should be fixed in version 1.4 which was released in March 2017