v3.0.0

This release introduces extended constraints, improved sanitization logic, updated documentation, and full support for .NET 9.

✨ New Features

• New Constraints
  • NotNullOrEmpty → ensures strings are not null or empty.
  • NotNullOrWhiteSpace → ensures strings are not null or whitespace.
  • Positive → enforces values greater or equal to 0.
  • StrictPositive → enforces values strictly greater than 0.
  • NonZero → disallows zero values.
  • RoundTo → rounds numbers to a specified number of decimals.
  • NotEmptyCollection → ensures collections are not empty.
  • DistinctCollection → ensures collections contain distinct elements.

🔧 Improvements

• Refactored sanitization logic with better handling for:
  • Numeric types (int, long, float, double, decimal)
  • String validation and normalization
  • Collections and objects (NotNull, NoDbNull, DistinctCollection)
• Added stricter Strict vs Relaxed validation modes.

📚 Documentation

• README.md improved with:
  • A Supported Constraints table in Markdown.

⚙️ Build & CI

• Bumped target framework to .NET 9.
• Updated GitHub Actions workflow (dotnet.yml) to run with .NET 9 SDK.
• Verified builds, tests, and NuGet packaging under .NET 9.

✅ Testing

• Extended unit test coverage for all new constraints.
• Verified sanitization behavior across string, numeric, object, and collection types.
• All tests passing successfully on .NET 9.