Version 1.6

First version of cleaned up code. Still have the centering of covariates issues. Not a bug per se but creates instability for VRAP since the Bayesian posteriors using centered covariates and 'stable' (nice compact ish posterior) which those with the uncentered covariates are a mess (scattershot) since the prod and cap are potenitally tiny (if mean cov is big) and thus sensitive to small changes to the potentially huge-mean covariates.

Next version deals with this problem by 'telling' VRAP that the prod and cap are from centered covariates. Then VRAP also centers in its SR functions (in CompRecruits.R).