Deprecate n_iter in SGDClassifier and implement max_iter (#5036)

benchmarks/bench_covertype.py

benchmarks/bench_sgd_regression.py

benchmarks/bench_sparsify.py

doc/modules/kernel_approximation.rst

doc/modules/linear_model.rst

doc/modules/sgd.rst

doc/tutorial/text_analytics/working_with_text_data.rst

doc/whats_new.rst

examples/linear_model/plot_sgd_iris.py

examples/linear_model/plot_sgd_separating_hyperplane.py

examples/linear_model/plot_sgd_weighted_samples.py

sklearn/decomposition/tests/test_kernel_pca.py

sklearn/ensemble/tests/test_bagging.py

sklearn/ensemble/tests/test_base.py

sklearn/feature_selection/tests/test_from_model.py

sklearn/linear_model/passive_aggressive.py

sklearn/linear_model/perceptron.py

sklearn/linear_model/sgd_fast.pyx

sklearn/linear_model/stochastic_gradient.py

sklearn/linear_model/tests/test_huber.py