Feature request: Skip to next/previous file/directory.

[MrJoy]

Instead of having to go through the file explorer dialog to navigate to a new or previous issue, it would be really helpful to be able to press a keystroke and go to the lexicographically next/previous file (or folder, if viewing a directory of pages) at the same depth in the directory tree.

[nickv2002]

Sure, that's an easily understandable and useful feature. Not sure when someone will get to it but I'd be happy to ship it.