update to be compatible with tmux 3

reference: samoshkin#31

Author: hughplay

tmux/tmux.conf

@@ -38,8 +38,8 @@ unbind "\$" # rename-session
 unbind ,    # rename-window
 unbind %    # split-window -h
 unbind '"'  # split-window
-unbind }    # swap-pane -D
-unbind {    # swap-pane -U
+unbind '}'    # swap-pane -D
+unbind '{'    # swap-pane -U
 unbind [    # paste-buffer
 unbind ]    
 unbind "'"  # select-window
@@ -105,7 +105,7 @@ bind L command-prompt -p "Link window from (session:window): " "link-window -s %
 
 # Swap panes back and forth with 1st pane
 # When in main-(horizontal|vertical) layouts, the biggest/widest panel is always @1
-bind \ if '[ #{pane_index} -eq 1 ]' \
+bind '\' if '[ #{pane_index} -eq 1 ]' \
      'swap-pane -s "!"' \
      'select-pane -t:.1 ; swap-pane -d -t 1 -s "!"'