Warning suggestion for git stash drop

Hi all,

Would it be possible to add an optional Yes/No when doing a 'git stash drop'? Something similar as what happens when pushing on a remotely checked out branch (with a config setting to turn the warning on/off).

I know that you can always get your dropped stash back using git reflog but a small warning might be a useful feature to avoid unwanted stash drops on a regular basis.

Thank you for your work on this amazing little software, All the best, Laurent