Early work on implementing NetworkX analysis
Updated template in preparation for NetworkX code
Early work on new code block function (for NetworkX)
Modified API so that Model objects now store Equation objects (rather than a subset of the data)
Reworked parse_equation_list() to return Equation objects in addition to variable names
New objects member in Model objects
Updated docstring for parse_equation_list()
Implemented NetworkX code
Added metadata code
New references module to store sources in long form
More work on standalone program
Added more argument-parsing code
New module to store diagnostic functions
Early work on diagnostics code
Added code to run a model; need to allow user to change pre-solve code, though