New upstream version 0.2.3

tests/data/validations/compression.txt

tests/data/validations/example_mapping.txt

tests/data/validations/writer_1_3.txt

tests/data/validations/writer_2_1.txt

tests/data_q.py

tests/developer.py

tests/finding_test.py

tests/github_handler_test.py

tests/ignore_now/cache_test.py

tests/ignore_now/default_plot_test.py

tests/ignore_now/external_links.py

tests/ignore_now/h5structure_test.py

tests/ignore_now/nxdlstructure_test.py

tests/ignore_now/validate_test.py

tests/ignore_now/warnings_test.py

tests/nxdl_manager_test.py

tests/nxdl_schema_test.py

tests/schema_manager_test.py

tests/utils_test.py

tests/validate_test.py