Added new tests for spike_train_generation
Added new tests for spike_train_generation

INM-6/elephant,mdenker/elephant,carloscanova/elephant,INM-6/elephant,NeuralEnsemble/elephant,ccluri/elephant,dholstein/elephant,neuroelectro/elephant,btel/elephant,apdavison/elephant,carloscanova/elephant,apdavison/elephant,Junji110/elephant,dholstein/elephant,etorre/elephant,alperyeg/elephant,mdenker/elephant,INM-6/elephant,pietroquaglio/elephant,pietroquaglio/elephant,ccluri/elephant,neuroelectro/elephant,JuliaSprenger/elephant,mdenker/elephant,espenhgn/elephant,etorre/elephant,NeuralEnsemble/elephant,NeuralEnsemble/elephant,alperyeg/elephant,btel/elephant,Junji110/elephant,espenhgn/elephant