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I assume that it should test the `re-load` functionality after testing the `save` functionality, however I'm also surprised that nobody points this out after such a long time, so maybe I've misunderstood the purpose. This PR is just in case :)

Signed-off-by: Kevin Trebing <Kevin.Trebing@gmx.net>

Fix comment typo

Fixed small typo

Fixing unused weight_decay argument

Update modeling_xlnet.py

Update modeling_bert.py

Fixed typo in migration guide

 Fix examples of loading pretrained models in docstring

Adding AutoTokenizer and AutoModel classes that automatically detect architecture - Clean up tokenizers

RestructuredText table for pretrained models.

Fix convert to tf

Currently the L2 regularization is hard-coded to "0.01", even though there is a --weight_decay flag implemented (that is unused). I'm making this flag control the weight decay used for fine-tuning in this script.