tmux: keep current pwd for window splits.

.tmux.conf

@@ -12,3 +12,7 @@ set-option -g repeat-time 300
 
 # Exit parent process when detaching from tmux
 bind-key d detach-client -P
+
+# Keep pwd for new splits
+bind-key '"' split-window -v -c '#{pane_current_path}'
+bind-key  %  split-window -h -c '#{pane_current_path}'