Tree LSTM implementation in MxNet.
Main file is in neuralTrig.py
NOTE: In order to run the code, the 'allow_extra_params' flag needs to be sat to True in exec_.copy_params_from(arg_params, aux_params, allow_extra_params=True) in function set_params(self, arg_params, aux_params) in file executor_group.py line 332.
MxNet commit hash: 58e334639c4d5a875bb5b8b33036c3fab8ed7115