**Full Changelog**
activations: Relu, Sigmoid, Tanh, Softmax
datasets: MNIST
layers: Dense layer
linalg: Tensor class
losses: l1_loss, l2_loss, cross_entropy_loss
models: l1_regressor, l2_regressor, ts_mnist_classifier
optimizers: sgd, sgd_momentum, sgd_nesterov, rms_prop, adam
saved_models: ts_mnist_classifier