- Added a powerful, calendar-aware date engine for complex arithmetic and natural language queries (e.g., `today + 3 weeks`).
- Added new interval operators: `to`, `between` (exclusive), and `through` (inclusive).
- Added support for timezone conversions (e.g., `now in "Japan"`).
- Added explicit date and time constructors: `date()`, `datetime()`, `datetimeZ()`, and `parseDate()`.
- Added support for forcing interval results into specific units (e.g., `today through tomorrow in hours`).