Merge branch 'issue/13' into 'develop'

src/main.cpp

src/mesh/ConnectivityComputer.cpp

src/mesh/GmshReader.cpp

src/mesh/MeshNodeBoundary.hpp

src/output/VTKWriter.hpp

src/scheme/AcousticSolver.hpp

src/utils/CMakeLists.txt

src/utils/CastArray.hpp

src/utils/Exceptions.cpp

src/utils/Exceptions.hpp

src/utils/Messenger.cpp

src/utils/Messenger.hpp

src/utils/Partitioner.cpp

src/utils/PugsAssert.hpp

src/utils/SignalManager.cpp