Merge branch 'develop' into feature/hyperelasticity

doc/userdoc.org

src/language/modules/BinaryOperatorRegisterForVh.cpp

src/language/modules/MathFunctionRegisterForVh.cpp

src/language/modules/MeshModule.cpp

src/language/modules/SchemeModule.cpp

src/language/modules/SchemeModule.hpp

src/language/modules/UnaryOperatorRegisterForVh.cpp

src/language/modules/WriterModule.cpp

src/language/modules/WriterModule.hpp

src/language/utils/BuiltinFunctionEmbedder.hpp

src/language/utils/CMakeLists.txt

src/language/utils/EmbeddedDiscreteFunctionMathFunctions.cpp

src/language/utils/EmbeddedDiscreteFunctionMathFunctions.hpp

src/language/utils/EmbeddedDiscreteFunctionOperators.cpp

src/language/utils/EmbeddedDiscreteFunctionOperators.hpp

src/language/utils/EmbeddedDiscreteFunctionUtils.hpp

...language/utils/EmbeddedIDiscreteFunctionMathFunctions.cpp

...language/utils/EmbeddedIDiscreteFunctionMathFunctions.hpp

src/language/utils/EmbeddedIDiscreteFunctionOperators.cpp

src/language/utils/EmbeddedIDiscreteFunctionOperators.hpp