message: Fix for compilation issue with emplace_back
  Apparently emplace_back isn't supported for std::bool until c++14
diff: @@ -141,7 +141,8 @@ std::tuple<float, float, float, unsigned int> JetSubstructureSplittings::GetJetC
  void JetSubstructureSplittings::AddSplitting(int parentLabel, bool followingIterativeSplitting, float kt, float deltaR, float z, std::vector<unsigned int> indices)
  {
  fSplitParentLabel.emplace_back(parentLabel);
  - fFollowingIterativeSplitting.emplace_back(followingIterativeSplitting);
  + // NOTE: emplace_back isn't supported for std::vector<bool> until c++14.
  + fFollowingIterativeSplitting.push_back(followingIterativeSplitting);
  fKt.emplace_back(kt);
  fDeltaR.emplace_back(deltaR);
  fZ.emplace_back(z);
  