fixed broken sample_discrete_from_log_2d
fixed broken sample_discrete_from_log_2d

fivejjs/pyhsmm,wgmueller1/pyhsmm,fivejjs/pyhsmm,wgmueller1/pyhsmm,wgmueller1/pyhsmm,theDataGeek/pyhsmm,mattjj/pyhsmm,wgmueller1/pyhsmm,theDataGeek/pyhsmm,fivejjs/pyhsmm,theDataGeek/pyhsmm,bikash/pyhsmm,theDataGeek/pyhsmm,fivejjs/pyhsmm,bikash/pyhsmm,mattjj/pyhsmm,bikash/pyhsmm,wgmueller1/pyhsmm,theDataGeek/pyhsmm,fivejjs/pyhsmm