Feature request: Better keyboard navigation

[jclsn]

As of now, it is no possible to navigate Zeal only with the keyboard. I have not found a way to get from the docset tab to the documentation window without clicking. It would be nice to have a better keyboard navigation. Many developers use the mouse as little as possible.

Would also be nice if the vi navigation style using h, j, k, l in addtion to up, down, left, rightwere supported.

[novaTopFlex]

I have similar problems, as I have been accustomed to navigating various graphical applications with only the keyboard. If I attempt to use the arrow keys to switch between different documentation pages, sections, or Dash Docsets, such arrow keys would move the browser portion even if my mouse/trackpad focus had been on the sidebar immediately prior.