__author__ = "Alfonso Tierno, Gerardo Garcia, Pablo Montes"
__date__ = "$26-aug-2014 11:09:29$"
-__version__ = "0.6.12"
-version_date = "Apr 2019"
-database_version = 38 # expected database schema version
+__version__ = "0.6.20"
+version_date = "May 2019"
+database_version = 39 # expected database schema version
global global_config
global logger