v2.18.0

Features

• all de/serializers support content type
• warn on 'Stopped' (non-Completed) jobs
• all predictors support serializer/deserializer overrides

Bug Fixes and Other Changes

• v2 upgrade tool should ignore cell starting with '%'
• use iterrows to iterate pandas dataframe
• check for distributions in TF estimator

Documentation Changes

• Update link to Sagemaker PyTorch Docker Containers
• create artifact restricted to SM context note

Testing and Release Infrastructure

• remove flaky assertion in test_integ_history_server
• adjust assertion of TensorFlow MNIST test