check max chargrams
check max chargrams


Former-commit-id: 215481f557071a097ce05af0d4b32c70284709d5 [formerly fb50f6d95cff8fde38c00e4810326e4073532b8b]
Former-commit-id: fc3454d2dd3243d06504d23a110265f1f1cc31ef
fiskio/lstm-char-cnn,ZhouJiaLinmumu/lstm-char-cnn,yoonkim/word-char-rnn,wavelets/lstm-char-cnn,pengsun/lstm-char-cnn,yoonkim/lstm-char-cnn,carpedm20/lstm-char-cnn