svkucheryavski/mdatools: v. 0.8.4

small improvements to calculation of statistics for regression coefficients pls.getRegCoeffs() now also returns standard error and confidence intervals calculated for unstandardized variables new method summary() for object with regression coefficients (regcoeffs) fixed a bug with double labels on regression coefficients plot with confidence intervals fixed a bug in some PLS plots where labels for cross-validated results forced to be numbers when using mdaplot for data frame with one or more factor columns, the factors are now transofrmed to dummy variables (before it led to an error) Bookdown documentation has been updates accordingl