const everywhere + légèrement changer format fichiers

src/Pieces/Generator.cpp

@@ -33,6 +33,7 @@ void Generator::generate(int polyominoSize, int lastAddedPositionNumber, int nex
 
         // we sort the rotations of the polyominos
         std::vector<Polyomino> candidateRotations;
+        candidateRotations.reserve(4);
         for (int i = 0; i < 4; i++) {
             candidate.normalize();
             candidateRotations.push_back(candidate);