Simple vim keybindings

[benfitzg]

Before you start.

• [x] I have checked the Rejected Features page.
• [x] I have searched the issue tracker for a feature request that matches the one I want to file, without success.

My great idea for Fraidycat is: Go ahead and lay it out here! Thank youuuu!

It's not original but I'd love keyboard shortcuts.

Simply something like:

j - up one entry k - down one entry space - collapse/un-collapse feed if on feed title, if on entry then open in new tab

The concept is excellent, as is the execution. Many thanks for this tool.