title: Exclude quickfix buffer from `:bnext` `:bprevious`
body: <p>The quickfix buffer (opened with <code>:cope</code> after a <code>:make</code> for instance) is included in the <code>:bnext</code> <code>:bprevious</code> navigation which I use very frequently (having mapped it to the arrow keys). I never want to navigate to the quickfix buffer that way however. Is there a good way to exclude it?</p>