1.1.5

Summary

• Improves locale/calendar correctness across heatmap rendering.
• Fixes weekday/month inconsistencies for non-default locale/calendar setups.
• Refactors month-grid computation for better testability and reliability.

What changed

• Added locale-aware API inputs to MMHeatmapView (calendar, locale, timeZone).
• Reworked month/week grid logic to respect calendar.firstWeekday.
• Removed hardcoded Sunday-first assumptions from date/grid calculations.
• Added MMHeatmapStyle.localizedWeekSymbols(...) helper for correct weekday label ordering.
• Hardened rendering against edge cases:
  • Safe handling for maxValue == 0
  • Safe fallback when week labels are invalid length
  • Reduced force-unwrap risk in date paths
• Extracted month-grid math into a dedicated utility (MMHeatmapMonthGrid).
• Split preview/playground code into separate preview file.
• Expanded test suite for locale/calendar semantics and grid behavior.

Compatibility

• Backward compatible with existing usage (new parameters are optional).
• Existing consumers can migrate incrementally by passing locale/calendar inputs when needed.

Migration hint

• For locale-correct weekday labels, generate week with:
  • MMHeatmapStyle.localizedWeekSymbols(calendar:locale:style:)
• Use the same calendar for both MMHeatmapData creation and MMHeatmapView.