default config: use `set` for directions

Using `set` for direction letter keys makes them easier to configure for
users who prefer traditional vim-style directions.

i3.config

@@ -21,6 +21,13 @@ font pango:DejaVu Sans Mono 8
 # X core fonts rendering does not support right-to-left and this being a bitmap
 # font, it doesn’t scale on retina/hidpi displays.
 
+# use these keys for focus, movement, and resize directions when reaching for
+# the arrows is not convenient
+set $up l
+set $down k
+set $left j
+set $right semicolon
+
 # use Mouse+Mod1 to drag floating windows to their wanted position
 floating_modifier Mod1
 
@@ -38,10 +45,10 @@ bindsym Mod1+d exec dmenu_run
 # bindsym Mod1+d exec --no-startup-id i3-dmenu-desktop
 
 # change focus
-bindsym Mod1+j focus left
-bindsym Mod1+k focus down
-bindsym Mod1+l focus up
-bindsym Mod1+semicolon focus right
+bindsym Mod1+$left focus left
+bindsym Mod1+$down focus down
+bindsym Mod1+$up focus up
+bindsym Mod1+$right focus right
 
 # alternatively, you can use the cursor keys:
 bindsym Mod1+Left focus left
@@ -50,10 +57,10 @@ bindsym Mod1+Up focus up
 bindsym Mod1+Right focus right
 
 # move focused window
-bindsym Mod1+Shift+j move left
-bindsym Mod1+Shift+k move down
-bindsym Mod1+Shift+l move up
-bindsym Mod1+Shift+semicolon move right
+bindsym Mod1+Shift+$left move left
+bindsym Mod1+Shift+$down move down
+bindsym Mod1+Shift+$up move up
+bindsym Mod1+Shift+$right move right
 
 # alternatively, you can use the cursor keys:
 bindsym Mod1+Shift+Left move left
@@ -133,10 +140,10 @@ mode "resize" {
         # Pressing right will grow the window’s width.
         # Pressing up will shrink the window’s height.
         # Pressing down will grow the window’s height.
-        bindsym j           resize shrink width 10 px or 10 ppt
-        bindsym k           resize grow height 10 px or 10 ppt
-        bindsym l           resize shrink height 10 px or 10 ppt
-        bindsym semicolon   resize grow width 10 px or 10 ppt
+        bindsym $left       resize shrink width 10 px or 10 ppt
+        bindsym $down       resize grow height 10 px or 10 ppt
+        bindsym $up         resize shrink height 10 px or 10 ppt
+        bindsym $right      resize grow width 10 px or 10 ppt
 
         # same bindings, but for the arrow keys
         bindsym Left        resize shrink width 10 px or 10 ppt