vim:keys: Swap behaviour of ]] and ][

Swap the behaviour of `[[` `[]`. This way the first bracket indicates
the direction of the motion and the second the target (i.e. open or
closed brace).

I assume that the reason behind these mappings is to be able to easily
change the direction of the move by 'inverting' the keys (e.g. `]]` ->
`[[`). I understand that, but find the new way more intuitive.

.config/vim/vimrc.d/40-keys.vim

@@ -210,3 +210,8 @@ nmap Q gqap
 " Mnemonic: "Unix timestamp convert" with pun to UTC
 nnoremap <leader>utc ciw<C-r>=strftime("%F %T", @")<CR><Esc>
 vnoremap <leader>utc :s/\v(^\|[^0-9])\zs[0-9]{10}\ze([^0-9]\|$)/\=strftime("%c",submatch(0))/g<CR>
+
+" Match the behaviour of [[ and []. ]] forward to next '}' in the first column
+" and ][ fw to next '[', instead of the other way around.
+noremap ]] ][
+noremap ][ ]]