Vulnerablecode

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- We updated RTD build configuration.
- We added importer for OSS-Fuzz.
- We removed vulnerabilities with empty aliases.
- We fixed search encoding issue https://github.com/nexB/vulnerablecode/issues/1336.
- We added middleware to ban "bytedance" user-agent.

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- We added note about CSRF_TRUSTED_ORIGINS.
- We added proper acknowledgements for NGI projects.
- We added throttling for anonymous users.

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- We added pagination to valid versions improver.

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- We added support to write packages and vulnerabilities at the time of import.

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- We fixed a text-overflow issue in the Essentials tab of the Vulnerability details template.
- We added clickable links to the Essentials tab of the Vulnerability details template that enable
the user to navigate to the Fixed by packages tab and the Affected packages tab.
- We fixed severity range issue for handling unknown scores.

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- We added importer specific improvers and removed default improver
additionally improve recent advisories first.