Currently, I need to specify default values and sometimes ranges on multiple places:

• As default model variables (for examples etc.)
• If I want to visualize, I need to define a min, max, step and a default value
• In batch_run I'm defining discrete ranges of variables
• Our benchmarks also have custom parameters.
• If I want to run in something like the EMAworkbench I'm again defining ranges

If seems like Mesa could benefit from some way to define default values and/or ranges in a better way that can be used throughout different components.