feat: Update package.json to 3.1.3

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feat: Update package.json to 3.1.2

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feat: Update package.json to 3.1.1

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feat: Update package.json to 3.1.0

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feat: Update package.json to 3.0.301

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feat: Update package.json to 3.0.300

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Merge remote-tracking branch 'origin/master'

Merge pull request #2055 from MessagePack-CSharp/fixBuggyWrites

Fix bugs in serializing long numbers

Merge pull request #2036 from MessagePack-CSharp/fix2034

Avoid crashing with stack overflow on recursive generic type parameter constraints

Merge pull request #2032 from MessagePack-CSharp/nullableValueTypes

Use simpler C# syntax for nullable value types