Merge branch 'f-semantic-target' into 'dev'

integrationtests/test_issues.py

src/caoscrawler/converters.py

src/caoscrawler/crawl.py

src/caoscrawler/exceptions.py

src/caoscrawler/identifiable.py

src/caoscrawler/identifiable_adapters.py

src/caoscrawler/scanner.py

src/caoscrawler/sync_graph.py

src/caoscrawler/sync_node.py

src/doc/getting_started/furtherreading.rst

tox.ini

unittests/test_crawler.py

unittests/test_file_identifiables.py

unittests/test_identifiable.py

unittests/test_identifiable_adapters.py

unittests/test_sync_graph.py

unittests/test_sync_node.py