New upstream version 0.2.3

src/punx/validations/__init__.py

src/punx/validations/application_definition.py

src/punx/validations/attribute.py

src/punx/validations/base_class_items_in_hdf5_group.py

src/punx/validations/default_plot.py

src/punx/validations/hdf5_group_items_in_base_class.py

src/punx/validations/item_name.py

src/punx/validations/nx_class_attribute.py

tests/__init__.py

tests/__main__.py

tests/cache_manager_test.py

tests/common.py

tests/common_test.py

tests/data/structures/02_03_setup.txt

tests/data/structures/33id_spec_22_2D.txt

tests/data/structures/compression.txt

tests/data/structures/example_mapping.txt

tests/data/structures/writer_1_3.txt

tests/data/structures/writer_2_1.txt

tests/data/validations/33id_spec_22_2D.txt