feat: support python v3.13, add mise.toml, remove doctest

[eonu]

Support python v3.13, add mise.toml and remove doctest

• Officially support Python v3.13.
• Remove doctest temporarily due to strange circular import errors despite unit tests passing.
• Add mise.toml for development environments.
• Update copyright notice.

Checklist

• I have added new tests (if necessary).
• I have ensured that tests and coverage are passing on CI.
• I have updated any relevant documentation (if necessary).
• I have used a descriptive pull request title.

[coveralls]

Pull Request Test Coverage Report for Build 93212ebf-e0ce-4d97-8ae6-8828d8171ca0

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 91.439%

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Totals
Change from base Build ae6acba7-7011-4214-b7ea-7ee972691f92:	0.0%
Covered Lines:	1036
Relevant Lines:	1133

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💛 - Coveralls