Bays09 data_to_fit dictionaries

- Add: Now can use Bays09 with FitExperiment. Adds data_to_fit dictionary, containing everything. Color is assumed to be in 'A', and takes 8 discrete values, which corresponds well to the data.
- Fix: dualrecall data was not wrapped in -pi, pi properly
- Fix: Sampler fit_mixture_model now always sets mixt_nontargets_sum
FitExperiment improvements and launcher

- Add: Added support for functional apply() paradigm on each dataset. Modified BIC and LL computation to use that. General enough so that everything meaningful should be implementable.
- Add: Launcher for single run of FitExperiment, computing BIC and LL on all datasets. Also run inference if desired, and computes Mixture model, Precision and FI in that case. General enough to be the one launcher used throughout for all parameter fittings now.
Added Generator for new FitExperiment

- Add: Generator for random sampling of Ratio/Sigma/T space with FitExperiment.