pca-v2.0.5 -  pca now works

calculates and display eigenvalues, eigenvectors, inertia,
data point in principal components system, and correlation
circle data

There are no memory leaks, and memory usage is minimal
(1 Mb for State_budget_data vs. 1 Gb for version 1.2 of pca
which was based on 2-dimensional arrays of static size).