Add support for launching iTerm 2.9+

The AppleScript bridge changed at some point since 2.1. While marked as
beta, the 2.9 series is the author's recommended version to use.

The two bridges are incompatible, requiring another function and version
checks.

resources/terminal

@@ -16,22 +16,49 @@ EOF`
 function open_iterm () {
   osascript > /dev/null <<EOF
   tell application "iTerm"
-    activate
+    if version < 2.9 then
-    try
+      activate
-      tell the first terminal
+      try
-        launch session "Default Session"
+      	tell current window
-        tell the last session
+          create tab with default profile
-          write text "bash -c \"$CMD\""
+    	    tell the current session of current window
-        end tell
+            write text "bash -c \"$CMD\""
-      end tell
+          end tell
-    on error
+      	end tell
-      tell (make new terminal)
+      on error
-        launch session "Default Session"
+    	  try
-        tell the last session
+          tell the first terminal
-          write text "bash -c \"$CMD\""
+            launch session "Default Session"
-        end tell
+            tell the last session
-      end tell
+              write text "bash -c \"$CMD\""
-    end try
+            end tell
+          end tell
+        on error
+          tell (make new terminal)
+            launch session "Default Session"
+            tell the last session
+              write text "bash -c \"$CMD\""
+            end tell
+          end tell
+        end try
+      end try
+    end if
+  end tell
+EOF
+}
+
+function open_iterm2point9 () {
+  osascript > /dev/null <<EOF
+  tell application "iTerm"
+  	if version ≥ 2.9 then
+      activate
+  		tell current window
+  			create tab with default profile
+  			tell first session of current tab
+  				write text "bash -c \"$CMD\""
+  			end tell
+  		end tell
+  	end if
   end tell
 EOF
 }
@@ -48,7 +75,7 @@ EOF
 }
 
 if [ "$ITERM_EXISTS" == "true" ]; then
-  open_iterm "$@" || open_terminal "$@"
+  open_iterm2point9 "$@" || open_iterm "$@" || open_terminal "$@"
 else
   open_terminal "$@"
 fi