Spectrochempy

NEW FEATURES
* Individual test data files can be automatically downloaded from the Github
`spectrochempy_data` repository is not present in the default `preferences.datadir`.
Installing the conda package `spectrochempy_data` is still possible but not necessary.

NEW FEATURES
* Concatenate and stack:
- `force_stack` keyword in concatenate() now deprecated.
- `stack()` method now generates a new dim, even if a dim of size one in present

BUG FIXED:
* issue 417
* Transmittance and absorbance units now correctly handled.

BREAKING CHANGES
* Requires pint >= 0.18

NEW FEATURES
* Compatibility with Python 3.10
- Spectrochempy is tested with 3.10, 3.9 version of python, and on Windows and linux platform. Older versions > 3.6 of python or different platforms may still work, but with no guaranty.

BUG FIXED
* Transmittance and absorbance units now correctly handled.
* Save dialog selection.

NEW FEATURES

* Remove the dependency to `nmrglue`.

* Improve `pip` installation (see Issue 402)

* Make `widget` as the default backend for matplotlib plots.

* Add `BaselineCorrector()` widget.

* Add `download_nist_ir()` to download IR spectra from NIST/webbook.

* Allow extracting background interferogram or spectrum in `read_srs()`.

* Allow extracting sample and background interferograms in `read_spa()`.

BUGS FIXED

* Fix bug in `read_srs`.

* Fix gettingstarted/overview.py after IRIS refactoring.

**NEW FEATURES**

* Add a log file (rotating)

**BUGS FIXED**

* TQDM progress bar

* Fix 360 : write a dataset with a specified filename do not open a dialog except if the file already exists and if
confirm=True is set.

* `read` and `read_dir` now ignore non readable files.

* `read_labspec` now ignore non-labspec .txt files.

* Fix 296 : IRIS and quadprog version.

* Fix 375 : plotting issues.

**NEW FEATURES**

* Added a `show_versions` method in the API.

* Improved bug reports and pull request templates. Requests for
help are now made in github discussions.

* Docs API reference has been hopefully improved.