Update based on JSS paper review comments
- Renamed fit_model function to disag_model. Deprecated fit_model, will be removed in the next version
- Renamed classes disag.data and fit.result to disag_data and disag_model
- Created a disag_predictions class which is returned by the predict function and contains the
mean and uncertainty predictions. This has replaced the predictions and uncertainty classes.
Plot, summary and print methods have been implemented for the disag_predictions class - Extracted the function make_model_object to allow the user to make a TMB model object on its own,
so it can be used in different optimiser or a for MCMC - Neatened up plot.disag_data function to produce 3 plots on the same canvas, with an optional which
argument for the user to choose which plots to display - Made the summary and print function return different outputs. Print functions show minmial output,
summary function are more deatiled