Added dropout component
Added StochasticANNComponent, with random object property
Added stochastic components control
Removed setOption, getOption, hasOption from ANNComponents
Merge branch 'pako-devel' into dropout
Testing new stochastic ANN components
Modified test script of auto-encoders
Added changes to CHANGELIST
Test for dropout component
Merge branch 'pako-devel' into dropout
Updated test of auto-encoders
Added new trainable.dataset_*_iterator functions, and implemented train_dataset, validate_dataset, and grad_check_dataset calling this function
Merge branch 'master' into release-v0.3.1
Merge branch 'devel' into release-v0.3.1
Added test of use_dataset
Added example from scartch for ANN training
Updated example from scratch
Changing the workstation
Added from scratch example
Minor change in digits test