Update release notes for version 0.7.2.

PiperOrigin-RevId: 435666792

Support quantization of gelu activation

PiperOrigin-RevId: 424128991

Update release notes

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Merge pull request tensorflow#712 from wwwind:clustering_release_note…

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Merge pull request tensorflow#703 from SaoirseARM:toupstream/cluster_…

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replace usage of "whitelist" with "allowlist"

PiperOrigin-RevId: 343882671

Update RELEASE.md for 0.4.1

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Bump version to 0.4.0 for new release.

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Correct QAT docs header sizes to make them visible in tensorflow.org …

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Bump up version to 0.2.1

PiperOrigin-RevId: 286251917