- Implement processSheetExists function to verify if a specified sheet exists in the workbook.
- Update README.md with usage examples for the new sheet existence check feature.
- Add unit tests for SheetExists functionality to ensure accurate detection of existing and non-existent sheets.
- Replace individual row handling with a unified approach to convert input values into a two-dimensional slice of interfaces.
- Streamline the writing process by directly passing the constructed slice to the WriteAll method, enhancing code clarity and maintainability.
- Implement new process handlers for creating, reading, updating, copying, and deleting sheets in Excel files.
- Enhance the Open function to automatically create directories for file paths if they do not exist.
- Update README.md to include detailed documentation and examples for new sheet operations, improving user guidance.
- Change the argument from readonly to writable in the processOpen function.
- Adjust the Open function call to reflect the new writable parameter for improved clarity in file handling.
- Introduce new process handlers for reading and writing rows and columns in Excel files.
- Update existing methods to utilize absolute paths for file operations, ensuring consistency.
- Add comprehensive tests for new row and column functionalities, including iterators for both.
- Implement rich text and comment handling, along with row height and column width adjustments.
