json2ciw

0.7.0 Added three_node_network.json: example that modifies the basic jackson network and uses lognormal and normal service distributions in v0.7.0 example_app.py: added three node example Changed schema.Distribution now supports "normal" with sample mean and std (ciw auto truncates normal at 0) engine.CiwConverter updated to handle ciw normal distribution. Handles standard deviation parameter when expressed as "std", "sd" or "var" using _extract_std() method. Fixed engine.CiwConverter updated handling log normal. Fixed incorrect parameter "standard_deviation". Should have been "sd". jackson_network.json: updated activity "type" parameter to "activity".