config_file + postgres_backend

requirements.in

@@ -4,6 +4,7 @@ pandas<1
 lxml==3.6.0  #lxml 3.7 causes problems in windows
 spyne<3
 treelib<2
+psycopg2
 
 # Web
 Flask

requirements.txt

@@ -37,6 +37,7 @@ pip-tools==1.8.0
 plotly==1.12.9
 pluggy==0.4.0             # via tox
 prettytable==0.7.2
+psycopg2==2.7.1
 py-cpuinfo==0.2.7
 py==1.4.33                # via pytest, tox
 pycodestyle==2.3.1        # via flake8