API changes Allow conversion factor of zero for GenericTransformer Python 3.6 is no longer officially supported. It may still work for a while though. New components/constraints Custom component: oemof.solph.custom.PiecewiseLinearTransformer. A transformer model with one input and one output and an arbitrary piecewise linear conversion function. On how to use the component, refer to the test script <https://github.com/oemof/oemof-solph/blob/dev/tests/test_scripts/test_solph/test_piecewiselineartransformer/test_piecewiselineartransformer.py>_ and example <https://github.com/oemof/oemof-examples/blob/master/oemof_examples/oemof.solph/v0.4.x/piecewise/piecewise_linear_transformer.py>_. Enhanced custom SinkDSM: Renamed keyword argument method to approach Renamed approaches interval to oemof and delay to DIW Added modeling approach DLR (PhD thesis of Hans Christian Gils 2015) Included load shedding Introduced recovery_time in DIW approach Introduced shift_time and other parameters for DLR approach Included investments in DSM Normalized keyword arguments demand, capapcity_up and capacity_down Bug fixes Check number of Flow s in GenericStorage Other changes Split code into submodules Move CI-Tests from Travis to github (see PR #746 <https://github.com/oemof/oemof-solph/pull/746>_) Contributors Jann Launer Johannes Kochems Patrik Schönfeldt Stefan Schirmeister Uwe Krien