add deprecation placeholders to __all__
add deprecation placeholders to __all__

Richi91/nntools,ErnstHowie/Lasagne,DeanChan/Lasagne,gabortakacs/Lasagne,rlkelly/Lasagne,ebattenberg/Lasagne,cancan101/Lasagne,MihailoIsakov/fishfish,mheilman/Lasagne,kracwarlock/Lasagne