Merge branch 'hotfix/fix_and_factorize' into 'master'

include/spm/const.h

src/common.h

src/frobeniusupdate.h

src/spm.c

src/spm_dof_extend.c

src/spm_gather.c

src/z_spm.h

src/z_spm_2dense.c

src/z_spm_expand.c

src/z_spm_norm.c

src/z_spm_print.c

tests/spm_compare.c

tests/spm_dof_expand_tests.c

tests/spm_dof_matvec_tests.c

tests/spm_dof_norm_tests.c

tests/spm_matvec_tests.c

tests/spm_norm_tests.c

tests/spm_scatter_gather_tests.c

tests/spm_tests.h