* Raise exception if group-by series contains NaN values.
* Add unit test cases to check that operation filter_and_group_series works and raises an exception if group-by series contains NaN values.

* Accessors text and label for private properties _text and
_label have been introduced. Using these instead of the
private properties.

Erxleben, Fredo authored Oct 04, 2021 and Hueser, Christian (FWCC) - 138593 committed Oct 04, 2021

* Offer Mixins for properties _text and _label as well as for settings.
* Adapt models accordingly.
* Adapt unit test cases.
* Move HIERARCHY_SEPARATOR to class Settings.

* Version v1.2.0-preview is an intermediate release.
* Adapt file CHANGELOG and add all recent changes since last release.
* Adapt version string in file pyproject.toml for v1.2.0-preview.

Hueser, Christian (FWCC) - 138593 authored Sep 29, 2021 and Erxleben, Fredo committed Oct 01, 2021

* Underscores in IDs of CSV data header need to be replaced by a slash.
* Character used in IDs of CSV data header need to be configurable.
* Adapt README to take into account new configuration variables.

* In some situations the CSV data header contains full IDs consisting of
QuestionCollection ID but no additional Question ID. In these cases the
framework marks these IDs with an underscore character as a placeholder
for Question IDs.

* Method remove_answers of class Question need to skip deletion of
answers if the participant ID is not (anymore) existing in dictionary of
answers given.

* Example scripts intend to explain the API of the HIFIS-Surveyval
Framework.
* Most important methods are explained in the context of examples 
given.
* Comments should give as much context and reference as needed to
understand analysis scripts as well as developing own analysis
scripts.
* Here examples are provided that demonstrate how to access
metadata and data from the DataContainer object passed in into
each analysis scripts.

Resolve "Automate rewriting of the CSV data file header if Question Collection full IDs are missing the Question ID part"

* The project and repository URL changed after cleaning up group hifis.
The subgroup overall needs to be added to group hifis where project and
repository URL is mentioned.

* Adapt file CHANGELOG.md and file pyproject.toml to prepare release of
version v1.1.1.

* Extract creation of series and dataframe objects into helper class
DataStructureCreator to be used in unit test cases.

* Extract method prepare_data_container into helper class
DataContainerLoader in order to reuse it in multiple unit test cases.

Hueser, Christian (FWCC) - 138593 authored Jul 30, 2021 and Erxleben, Fredo committed Jul 30, 2021

Resolve "Adapt file README and erase section in 'Quick Start Example: Run Analysis' about where to access Survey data"

Signed-off-by: Fredo Erxleben <f.erxleben@hzdr.de>

Signed-off-by: Fredo Erxleben <f.erxleben@hzdr.de>

Hueser, Christian (FWCC) - 138593 authored Jul 28, 2021 and Hueser, Christian (FWCC) - 138593 committed Jul 29, 2021

* Move example preprocessing implementation into separate file instead
of being placed inside example analysis script because it is only
executed if it is located as a separate file in the root folder of the
project.

Signed-off-by: Fredo Erxleben <f.erxleben@hzdr.de>

This only became apparent when running the proglam from CLI
Signed-off-by: Fredo Erxleben <f.erxleben@hzdr.de>

* Fix method data_frame_for_ids to construct dataframe from list of
dataframes.
* Concatenation needs parameter axis=1 (concatenate columns) to construct
dataframe properly.

Hueser, Christian (FWCC) - 138593 authored Jul 28, 2021 and Erxleben, Fredo committed Jul 28, 2021

Resolve "Method constructing a series from a given question ID should set the name of the index column"

Reason: https://github.com/PyCQA/flake8/pull/1317

Signed-off-by: Fredo Erxleben <f.erxleben@hzdr.de>

* Add new entries in file CHANGELOG that documents latest changes from
v1.0.1 to version v1.1.0.

Signed-off-by: Fredo Erxleben <f.erxleben@hzdr.de>