- Remove incorrect %C mapping (was mapping century to full year)
- Add special handling for %C (century), %c (datetime), %n (newline), %t (tab), %x (date)
- Add %h mapping (same as %b for abbreviated month)
- Tighten edge-case test assertions to use assertSame/assertMatchesRegularExpression
- Add tests for new directives: %C, %c, %n, %t, %x, %h
- Fixed bug where render() was not passing caller-supplied to
generate(), causing ad-hoc tokens to be ignored
- Added %F (yyyy-MM-dd) and %D (MM/dd/yy) composite date formats to
the IntlDateFormatter pattern map
- Added test coverage for composite date format directives (%F, %D, %T, %R)
- Replaced deprecated strftime() with IntlDateFormatter
- Added proper handling for edge cases:
- Strings with '%' not in date format (e.g., 'Discount: 50%')
- Invalid date formats (e.g., '%-%-%', '%Y-%q-%bad')
- Very long strings
- Added comprehensive unit tests for Token_lib
- All date format specifiers now mapped to IntlDateFormatter patterns
