Update time bound

[parsonsmatt]

This PR updates the time bound to match a revision made today. Additionally, cabal.project has been updated with necessary things to build with GHC 9.12.

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• Bumped the version number.
• Documented new APIs with Haddock markup.
• Added @since declarations to the Haddock.
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• Update the Changelog.md file with a link to your PR.
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