# CHANGELOG

## [1.1.0] : Refactor and Optimization

### Performance
* **IntlCache**: Implemented caching for `Intl` objects. Date formatting no longer creates new instances on every refresh.
* **Shared Styles**: Used `adoptedStyleSheets` instead of `<style>` tags. The browser parses CSS only once.
* **Date Math**: Removed `while` loops for year/month calculations. Replaced them with faster O(1) mathematical formulas.

### Stability and UI
* **Layout Shift (CLS)**: Fixed content jumping on load. The component now has a default `min-height`.
* **Initialization**: Added a non-breaking space (`\u00A0`) at start. This prevents zero height before the first render.
* **TickHub Safety**: Iteration over subscribers now uses a copy. An error in one timer will not stop others.

### Code Quality
* **Private Fields**: Changed `_variable` convention to native private fields `#variable`. Internal state is now fully protected.
* **Attribute Handling**: Improved attribute update logic (`#isAttrUpdate`). This eliminates unnecessary render cycles.
* **Auto-restart**: The stopped timer restarts automatically if the target date changes to the future.
* **Fallback**: Added a safety check returning `00:00:00` if formatting results in an empty string.

## [1.0.1] : Added README.md

## [1.0.0] : First version