time_plus

• Updated README

• Updated README

• Added full suite of Duration → fractional unit getters:
  • asMilliseconds, asSeconds, asMinutes, asHours, asDays, asWeeks, asMonths, asYears, asDecades, asCenturies
• Added new DateTime calendar-aware getters:
  • daysInMonth, daysInYear
• Added smart Duration creation from int and double:
  • 1.days, 2.hours, 3.centuries and 1.5.hours, 0.25.years, 2.75.months, etc. Uses decomposition for precise accuracy.
• Updated month/year/decade/century logic for Duration:
  • Now uses long-term Gregorian calendar averages:
    • Month ≈ 30.436875 days
    • Year ≈ 365.2425 days
    • Decade ≈ 3,652.425 days
    • Century ≈ 36,524.25 days
  • Improves consistency, accuracy, and alignment with real-world time math
  • Replaces prior approximations (30, 365, 3650, etc.)
• Added time vs time_plus comparison section to README:
  • Highlights architectural improvements, precision gains, and test coverage
  • Documents why time_plus is a modern, high-performance alternative to the time package

All new additions are documented in the README and covered by tests.
For exact calendar logic, continue using DateTime methods.

• Added full suite of Duration → fractional unit getters:
  • asMilliseconds, asSeconds, asMinutes, asHours, asDays, asWeeks, asMonths, asYears, asDecades, asCenturies
• Added new DateTime calendar-aware getters:
  • daysInMonth, daysInYear
• Added smart Duration creation from int and double:
  • 1.days, 2.hours, 3.centuries and 1.5.hours, 0.25.years, 2.75.months, etc. Uses decomposition for precise accuracy.
• Updated month/year/decade/century logic for Duration:
  • Now uses long-term Gregorian calendar averages:
    • Month ≈ 30.436875 days
    • Year ≈ 365.2425 days
    • Decade ≈ 3,652.425 days
    • Century ≈ 36,524.25 days
  • Improves consistency, accuracy, and alignment with real-world time math
  • Replaces prior approximations (30, 365, 3650, etc.)
• Added time vs time_plus comparison section to README:
  • Highlights architectural improvements, precision gains, and test coverage
  • Documents why time_plus is a modern, high-performance alternative to the time package

All new additions are documented in the README and covered by tests.
For exact calendar logic, continue using DateTime methods.

• Added comprehensive DateTime subtraction extensions with calendar-aware date arithmetic
• Added DateTimeSubtractMonthsAndYearsExtension with subtractMonths, subtractYears, subtractMonth, subtractYear methods
• Added DateTimeSubtractExtendingYearsExtension with subtractDecades, subtractCenturies, subtractDecade, subtractCentury methods
• Works better than "adding minus days" or "adding minus weeks"
• Lowered Dart SDK constraint to >=2.12.0 <4.0.0 for wider compatibility

• Added comprehensive DateTime subtraction extensions with calendar-aware date arithmetic
• Added DateTimeSubtractMonthsAndYearsExtension with subtractMonths, subtractYears, subtractMonth, subtractYear methods
• Added DateTimeSubtractExtendingYearsExtension with subtractDecades, subtractCenturies, subtractDecade, subtractCentury methods
• Works better than "adding minus days" or "adding minus weeks"
• Lowered Dart SDK constraint to >=2.12.0 <4.0.0 for wider compatibility

• Added DateTimeNextExtensions extension on DateTime class:
  • Advanced date navigation methods:
    • nextWeekdayTime: Find the next occurrence of a specific weekday with optional time
    • nextTimeOfDay: Find the next time matching a specific time of day

• Added DateTimeNextExtensions extension on DateTime class:
  • Advanced date navigation methods:
    • nextWeekdayTime: Find the next occurrence of a specific weekday with optional time
    • nextTimeOfDay: Find the next time matching a specific time of day

• Added DateTimeWeekdayExtensions extension on DateTime class:
  • Day navigation getters:
    • yesterday: Returns start of previous day
    • tomorrow: Returns start of next day
  • Weekday navigation getters:
    • nextWeekday: Returns weekday number of next day
    • previousWeekday: Returns weekday number of previous day

• Added DateTimeWeekdayExtensions extension on DateTime class:
  • Day navigation getters:
    • yesterday: Returns start of previous day
    • tomorrow: Returns start of next day
  • Weekday navigation getters:
    • nextWeekday: Returns weekday number of next day
    • previousWeekday: Returns weekday number of previous day

Added detailed README for enhanced user experience.

Added

• README with:
  • Emoji-based Table of Contents
  • Categorized DateTime and Duration extensions
  • Code examples for features
  • Emoji icons for readability
  • "Back to Top" links
  • Sections on:
    • DateTime: Time units, precision, boundaries, leap year
    • Duration: Time units, factory methods, conversion, breakdown, removal
  • Examples with use cases, edge cases, chainable operations, calendar-aware calculations
  • Support: License, support link, branding