batch_length doesn't seem to work

[seolhokim]

dreamer-pytorch/dreamer/algos/dreamer_algo.py

Line 194 in 47bd509

observation = samples.all_observation[:-1] # [t, t+batch_length+1] -> [t, t+batch_length]

in there, observation shape is [15, 50, 3, 64, 64].

dreamer-pytorch/dreamer/algos/dreamer_algo.py

Line 145 in 47bd509

samples_from_replay = self.replay_buffer.sample_batch(self._batch_size, self.batch_length)

but i guess you intended to get [50, 50, 3, 64, 64]. what do you think?