Release v0.1.0

This is the initial release of excel-cli, a lightweight terminal-based Excel viewer with Vim-like navigation.

Added

• Browse and switch between worksheets in multi-sheet workbooks
• Delete worksheets from multi-sheet workbooks
• Delete column and row functionality
• Edit cell contents with a text editor
• Save changes to Excel files
• Export data to JSON format with customizable header options
• Vim-like commands for navigation and operations:
  • h, j, k, l for cell navigation
  • 0, ^, $ for row navigation
  • gg, G for column navigation
  • Ctrl+←→↑↓ for jumping to non-empty cells
  • /, ? for searching with n, N for navigation between matches
  • : for command mode with various commands
• Copy, cut, and paste functionality with y, d, and p keys
• Support for pipe operator when exporting to JSON