Bump version to 1.5.4 (aws#286)

Bump version to 1.5.3 (aws#277)

Support SageMaker algorithms in ICN region. (aws#262)

Bump version to 1.5.1 (aws#257)

Add support for PyTorch (aws#243)

Add support for PyTorch framework.

Upgrade version to 1.4.2. (aws#234)

* Upgrade version to 1.4.2.

* Address PR comments.

Fix Local Mode for non Framework containers. (aws#213)

Don't assume that sagemaker_submit_directory is present in the
hyperparameters.

Add hyperparameter tuning support (aws#207)

Add ap-northeast-1 (Tokio) region support (aws#196)

bump version to 1.2.5 (aws#193)