text: Title: Comment out all the deep learning stuff for now
  Body: it's not finished, and installing the libraries is difficult. 
  
  eventually, put the deep learning stuff behind an install check, just like XGBoost. if the user wants to go through the hassle of installing those packages themselves (which we'd highly recommend), the functionality's there! but if they just want something that works out of the box, they shouldn't have to go through all that extra effort. 