Merge branch nektar:master into master

CHANGELOG.md

CMakeLists.txt

cmake/ThirdPartyBoost.cmake

docs/user-guide/utilities/nekmesh.tex

library/Demos/LibUtilities/FieldIOBenchmarker.cpp

library/FieldUtils/Python/VtkWrapper.hpp

library/LibUtilities/BasicUtils/ArrayPolicies.hpp

library/LibUtilities/BasicUtils/CheckedCast.hpp

library/LibUtilities/BasicUtils/FieldIO.cpp

library/LibUtilities/BasicUtils/Filesystem.hpp

library/LibUtilities/BasicUtils/ParseUtils.cpp

library/LibUtilities/BasicUtils/ParseUtils.h

library/LibUtilities/BasicUtils/RealComparison.hpp

library/LibUtilities/BasicUtils/Vmath.hpp

library/LibUtilities/BasicUtils/VmathArray.hpp

library/LibUtilities/BasicUtils/VmathSIMD.hpp

library/LibUtilities/CMakeLists.txt

library/LibUtilities/Communication/Comm.h

library/LibUtilities/LinearAlgebra/CanGetRawPtr.hpp

library/LibUtilities/LinearAlgebra/MatrixFuncs.h