bolasso 0.5.0

• Addresses [#19]. When family = "multinomial" is
  specified, previously bolasso did not correctly support variable selection, plotting, etc.
  This version addresses this. In general, when family = "multinomial", all outputs become a list
  where each list element corresponds to a unique outcome in the multinomial response vector. However,
  the content of each list element will be the same as it originally was (e.g. a tibble of
  coefficients, or a vector of variable names, etc.). In the case of plotting, it will create a
  facetted plot with one facet per unique outcome. The only limitations are that family = "mgaussian"
  is not currently supported, and when predicting with family = "multinomial", only type = "class"
  is currently supported. These may be added at a later date.