v3.4.0

In this release, test coverage is 76%.

💥 New features:

• dataset.io.h5fmt.HDF5Reader.read method: added new default argument to set
  default value for missing data in the HDF5 file (backward compatible). The default
  value of default is NoDefault (a special value to indicate that no default value
  should be used, and that an exception should be raised if the data is missing).
• widgets.codeeditor.CodeEditor: added new inactivity_timeout argument to set
  the time (in milliseconds) to wait after the user has stopped typing before
  emitting the CodeEditor.SIG_EDIT_STOPPED signal.
• Added execenv.accept_dialogs attribute to control whether dialogs should be
  automatically accepted or not (default is None, meaning no automatic acceptance):
  this allows more coverage of the test suite. For now, this attribute has only been
  proven useful in tests/dataset/test_all_features.py.
• Added unit tests for HDF5 and JSON serialization/deserialization:
  • Testing an arbitrary data model saved/loaded to/from HDF5 and JSON files,
    with various data sets and other data types.
  • Testing for backward compatibility with previous versions of the data model
    (e.g. new attributes, removed attributes, etc.)

⚠️ API breaking changes:

• guidata.dataset.io module is now deprecated and will be removed in a future
  release. Please use guidata.io instead. This change is backward compatible
  (the old module is still available and will be removed in a future release).
  The motivation for this change is to simplify the module structure and to help
  understand that the scope of the io module is not limited to dataset.DataSet
  objects, but may be used for any kind of data serialization/deserialization.

📖 Documentation:

• Added missing DataSetEditDialog and DataSetEditLayout classes
• Added missing inheritance/member details on some classes
• Reduced table of contents depth in left sidebar for better readability