Changes in randomLCA version 0.1-4

  o fixed bug in adaptive random by class model fit
  
Changes in randomLCA version 0.1-3

  o made vignette creation faster

Changes in randomLCA version 0.1-2

  o fixed bug where convergence failure wasn't identified for some
    models, resulting in infinite loops
    
  o fixed bug causing outcome probabilities of 0 or 1 not to be plotted
  
  o included vignette for examples

First realease version 0.1-1
