v1.0.3 2016-05-31 -- Version 1.
-added possibility for time dependence on flexible demand strategy (new column in input file)

v1.0.2 2015-03-27 -- Version 1.03-27
-improvements to result plotting
-python 3 compatible
-misc bug fixes

v0.8.0, 2014-12-04 -- Test version
-added pumped storage
-added flexible demand

v0.7.0, 2014-08-05 -- Test version
 