Delete .travis.yml

AdaNet release 0.9.0.

Remove Python 3 from notebook tutorials.

Convert pip setup code to Python 3 only.

Add warm_start support to adanet Estimators.

Adding the ability to disable the batch_config that is added automatically for the inference graph for tpu predictions.

Automated refactoring to make code Python 3 compatible.

Enable adanet to run subestimators in prediction only mode.

Preserved the outputs in the PredictionOutput that are not in the best_export_outputs.

Fix copybara rule for `py_strict_test`.

Only test on Python 3 and TF 2.1. | Resolves #146.

Update colab notebooks for tf.contrib removal.

Explicitly replace "import tensorflow" with "tensorflow.compat.v1"

Fix failing tests due to removal of tf.contrib.

Add ModelFlow Colab tutorial. #1