Bump version to 1.2.4

Author: hsbt

lib/ipaddr.rb

@@ -40,7 +40,7 @@
 #   p ipaddr3                   #=> #<IPAddr: IPv4:192.168.2.0/255.255.255.0>
 
 class IPAddr
-  VERSION = "1.2.3"
+  VERSION = "1.2.4"
 
   # 32 bit mask for IPv4
   IN4MASK = 0xffffffff