Added #

• Initial release of datetime_utils package
• Comprehensive DateTime extensions with methods for:
  • Date manipulation (add/subtract months, rounding operations)
  • Date comparison (same day/month, between dates)
  • Boundary checks (first/last day of year/month/week)
  • Utility functions (days in month, week number)
• TimeOfDay extensions with methods for:
  • Time comparison and range checking
  • Time difference calculation
  • Time formatting and conversion to minutes
• DateTimeCalculator class with static methods for:
  • Date arithmetic operations
  • Date rounding utilities
  • Helper functions (leap year detection, days in month)

Documentation #

• Added comprehensive Dart doc comments to all public methods
• Updated README with detailed usage examples and feature descriptions
• Created complete package documentation

Technical Details #

• Compatible with Flutter SDK >= 1.17.0
• Dart SDK ^3.8.1
• Lightweight with no external dependencies beyond Flutter SDK