Release v0.4

Update

• Refactored the existing codebase for improved readability and maintenance.
• Integrated customtkinter for enhanced UI components and consistency.
• Optimized various functions and algorithms to enhance overall speed and performance.

Fix

• Corrected a spelling mistake in the README file for better clarity.
• Updated a specific command in the .yml workflow file to ensure proper execution.

Full Changelog: v0.3...v0.4