Add message for 1.4.3

Author: skuroda

messages.json

@@ -13,5 +13,7 @@
     "1.1.1": "messages/1.1.1.txt",
     "1.2.0": "messages/1.2.0.txt",
     "1.2.1": "messages/1.2.1.txt",
-    "1.3.0": "messages/1.3.0.txt"
+    "1.3.0": "messages/1.3.0.txt",
+    "1.4.0": "messages/1.4.0.txt",
+    "1.4.3": "messages/1.4.3.txt"
 }

messages/1.4.3.txt

@@ -0,0 +1 @@
+- Fix bugs related to ST2 and the cut to file command