"u" should be mapped to Ctrl-Z

[Perry Cate]

I make mistakes a lot, so this was one of the first things I noticed...

[Arnaldo Russo]

This feature would be very nice to see!
BTW, thanks for deving this such a great tool!
I hava always to use Libreoffice, and always typing 'jjjjj' is really anoying! Now at least this problem is solved to me! 👍

[Sean Yeh]

Thanks for pointing this out. I just added undo/redo functionality with u and C-r.