Merge branch 'master' into feature/fragment

.gitlab-ci.yml

gitlab-ci/release.sh.in

sefht.geany

src/lib/Makefile.am

src/lib/sefht/data.c

src/lib/sefht/data.h

src/lib/sefht/node_fragment.c

src/lib/sefht/validator.c

src/lib/sefht/validator.h

src/lib/sefht/validator_attr.c

src/lib/sefht/validator_attr.h

src/lib/sefht/validator_attr_data.h

src/lib/sefht/validator_html.h

src/lib/sefht/validator_tag.c

src/lib/sefht/validator_tag.h

src/lib/sefht/validator_tag_data.h

tests/Makefile.am

tests/test_node_fragment.c

tests/test_validator.c

tests/test_validator_attr.c