Merge branch 'f-yaml' into 'dev'

CHANGELOG.md

src/caoscrawler/converters.py

src/caoscrawler/crawl.py

unittests/test_converters.py

unittests/test_directories/examples_json/brokenjson.json

unittests/test_directories/examples_json/invalidjson.json

unittests/test_directories/test_yamls/brokenyaml.yml

unittests/test_directories/test_yamls/invalidyaml.yml

unittests/test_directories/test_yamls/testyaml.schema.json

unittests/test_directories/test_yamls/testyaml.yml