GitLab

* Support for checkpointing quantizations
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* Add jaxpr test for quant checkpoint name
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* Revert "Support for checkpointing quantizations"

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* Checkpoint quantizations
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* lint
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* move checkpointing to VJPs
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* Changing default activations in MLP, TransformerLayer, dropout rate after FC1 to 0, and return_layernorm_output to False
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