Shift-Tab keyboard shortcut

feature-request

#1

As the title says, maybe the Shift-Tab keyboard shortcut could be introduced so that it takes you back one note while editing the lyrics?

When editing lyrics, Tab takes you to the following note while keeping you in edit mode, but Shift-Tab… I don’t really know what it does. (Also Tab doesn’t show up in the Key Bindings window, that or I just can’t find it.)