Pump up to 0.7.4

Author: trikko

source/serverino/common.d

@@ -32,7 +32,7 @@ alias CoarseTime = MonoTimeImpl!(ClockType.coarse);
 // Serverino version
 public static int SERVERINO_MAJOR = 0;
 public static int SERVERINO_MINOR = 7;
-public static int SERVERINO_REVISION = 3;
+public static int SERVERINO_REVISION = 4;
 
 // Struct WorkerPayload is used to pass data from the worker to the daemon
 // It is prepended to the actual response payload