Adding support for slashes, phase 3
Adding support for slashes, phase 3

arshiacont/libmusicxml,dfober/libmusicxml,arshiacont/libmusicxml,grame-cncm/libmusicxml,grame-cncm/libmusicxml,grame-cncm/libmusicxml,arshiacont/libmusicxml,arshiacont/libmusicxml,dfober/libmusicxml,grame-cncm/libmusicxml,grame-cncm/libmusicxml,grame-cncm/libmusicxml,dfober/libmusicxml,dfober/libmusicxml,arshiacont/libmusicxml