Fixing the clock and adding new signals

src/minefield.cpp

@@ -31,7 +31,6 @@ void MineField::initBombs(int x, int y) {
 }
 
 bool MineField::openCell(int x, int y) {
-  
   if(isBomb(x, y)) {
     m_exploded = true;
     gameOverSignal.emit();