Restore development version

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

src/misc.cpp

@@ -50,7 +50,7 @@ using namespace std;
 /// Version number. If this is left empty, the current date (in the format
 /// YYMMDD) is used as a version number.
 
-static const string EngineVersion = "1.5.1";
+static const string EngineVersion = "";
 static const string AppName = "Stockfish";
 static const string AppTag  = "";
 

src/search.cpp

@@ -199,7 +199,7 @@ namespace {
   Depth ThreatDepth; // heavy SMP read access
 
   // Last seconds noise filtering (LSN)
-  const bool UseLSNFiltering = false;
+  const bool UseLSNFiltering = true;
   const int LSNTime = 4000; // In milliseconds
   const Value LSNValue = value_from_centipawns(200);
   bool loseOnTime = false;