Various fixes:

#1 Bad insertion position behavior on Windows key hold
  * This was already fixed in a previous release
 #6 Cmd + Tab (hold) does not allow to use Left and Right arrow keys
 #8 Requires Administrator rights

mac.ahk

@@ -7,21 +7,6 @@
 ; ! Ctrl (because of remapkey). For example, `Send, ^!a` would press Ctrl+Alt+A, and Send, ^{Home} would send Ctrl+Home. Note: ^A produces a different effect in some programs than ^a. This is because ^A presses Ctrl+Shift+A and ^a presses Ctrl+A. If in doubt, use lowercase.Sends Ctrl. For example, Send, ^!a would press Ctrl+Alt+A, and Send, ^{Home} would send Ctrl+Home. Note: ^A produces a different effect in some programs than ^a. This is because ^A presses Ctrl+Shift+A and ^a presses Ctrl+A. If in doubt, use lowercase.
 ; & An ampersand may be used between any two keys or mouse buttons to combine them into a custom hotkey.
 
-; Relauch as admin if not already running as admin
-full_command_line := DllCall("GetCommandLine", "str")
-
-if (!(A_IsAdmin or RegExMatch(full_command_line, " /restart(?!\S)")))
-{
-    try
-    {
-        if (A_IsCompiled)
-            Run *RunAs "%A_ScriptFullPath%" /restart
-        else
-            Run *RunAs "%A_AhkPath%" /restart "%A_ScriptFullPath%"
-    }
-    ExitApp
-}
-
 #NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
 ; #Warn  ; Enable warnings to assist with detecting common errors.
 SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.
@@ -39,14 +24,46 @@ Ctrl & Tab::AltTab
 ^q::Send, !{f4}
 
 ; Insertion point movement
-^Left::Send, {Home}
-^Right::Send, {End}
-^Up::Send, ^{Home}
-^Down::Send, ^{End}
-+^Left::Send, +{Home}
-+^Right::Send, +{End}
-+^Up::Send, +^{Home}
-+^Down::Send, +^{End}
+^Left::
+    Suspend, On
+    Send, {Home}
+    Suspend, Off
+return
+^Right::
+    Suspend, On
+    Send, {End}
+    Suspend, Off
+return
+^Up::
+    Suspend, On
+    Send, ^{Home}
+    Suspend, Off
+return
+^Down::
+    Suspend, On
+    Send, ^{End}
+    Suspend, Off
+return
++^Left::
+    Suspend, On
+    Send, +{Home}
+    Suspend, Off
+return
++^Right::
+    Suspend, On
+    Send, +{End}
+    Suspend, Off
+return
++^Up::
+    Suspend, On
+    Send, +^{Home}
+    Suspend, Off
+return
++^Down::
+    Suspend, On
+    Send, +^{End}
+    Suspend, Off
+return
 #Left::
     Suspend, On
     Send, ^{Left}