Changes and Bug Fixes in Version 3.5.1

NEW FUNCTIONS AND FILES:
abline - Draws a line on the current axes with a given slope and intercept.   [demo]
evrirelease - Returns Eigenvector product release number.
evriuninstall - Uninstall an Eigenvector Research toolbox.
getmlversion - Returns current Matlab version as an integer.
purity - Is a self-modeling mixture analysis method based on purity of variables or spectra   [demo]
purityengine - Calculates purity values of columns of data set   [demo]