No AutoEncoder in keras anymore

[Alibm73-zz]

from keras.layers.core import AutoEncoder is no longer available.
and there is also an error for activity_l2(). it doesn't recognize it

params3 = {"activation": 'relu', "loss": 'mse', "optimizer": deep_sign_sgd_optimizer,
           "nb_epoch": 200, "batch_size": 20, "reduction_function": deep_sign_reduction_function,
           "hidden_dropout": 0.1, "input_dropout": None, "activity_regularizer": activity_l2(), "denoise_ratio": 0.1}
# deepsign params harsh - as described in deepsign article
params4 = {"activation": 'relu', "loss": 'mse', "optimizer": deep_sign_sgd_optimizer,
           "nb_epoch": 1000, "batch_size": 20, "reduction_function": deep_sign_reduction_function,
           "hidden_dropout": 0.2, "input_dropout": None, "activity_regularizer": activity_l2(), "denoise_ratio": 0.2}
# Trying to improve params for our causes
params5 = {"activation": 'relu', "loss": 'mse', "optimizer": deep_sign_sgd_optimizer,
           "nb_epoch": 200, "batch_size": 128, "reduction_function": deep_sign_reduction_function,
           "hidden_dropout": 0.4, "input_dropout": None, "activity_regularizer": activity_l2(), "denoise_ratio": None}
# Trying to improve params for our causes
params6 = {"activation": 'softmax', "loss": 'mse', "optimizer": 'rmsprop',
           "nb_epoch": 100, "batch_size": 128, "reduction_function": half_reduction_function,
           "hidden_dropout": 0.4, "input_dropout": None, "activity_regularizer": None, "denoise_ratio": None}
# Trying to improve params for our causes
params7 = {"activation": 'relu', "loss": 'mse', "optimizer": "rmsprop",
           "nb_epoch": 100, "batch_size": 20, "reduction_function": gradient_reduction_function,
           "hidden_dropout": 0.5, "input_dropout": None, "activity_regularizer": activity_l2(), "denoise_ratio": None}
# Trying using 1 epoch
params8 = {"activation": 'relu', "loss": 'mse', "optimizer": "rmsprop",
           "nb_epoch": 1, "batch_size": 20, "reduction_function": gradient_reduction_function,
           "hidden_dropout": 0.5, "input_dropout": None, "activity_regularizer": activity_l2(), "denoise_ratio": None}