- Added `Version` constant to define software version.

[ksred]

• Introduced versionCmd in Cobra commands to display the current version.
• Updated main function to include versionCmd.
• Enhanced getGitDiff function with comments for better clarity, detailing steps for retrieving both staged and unstaged diffs.

[ksred]

Thank you for your work on improving the getGitDiff function. I appreciate the clear comments and more structured approach you've implemented. However, I have a suggestion to further enhance the function's robustness and flexibility.

Currently, the function exits the program when an error occurs. Instead, I recommend returning an error along with the diff string. This change would allow for more graceful error handling and make the function more versatile in different contexts.

I've provided a suggested implementation in the comments that demonstrates this approach. The key changes are:

1. Modifying the function signature to return both a string and an error.
2. Using fmt.Errorf to create descriptive error messages.
3. Returning these errors instead of calling log.Fatal.

This modification will allow the calling function to decide how to handle any errors that occur, which is generally a better practice in Go.

Please review the suggested implementation and let me know if you have any questions or if you'd like to discuss this further. I believe this change will significantly improve the overall error handling in your code.

Thanks, this sounds like a good idea.