.. _whatsnew-0.4:

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What's New in dysh 0.4?
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Overview
========
In this release, `dysh` has the following new or updated features:

* Smoothing of :py:class:`Spectrum` objects along their spectral axis. (see `Spectrum.smooth <https://dysh.readthedocs.io/en/release-0.4.0/reference/modules/dysh.spectra.html#dysh.spectra.spectrum.Spectrum.smooth>`_)
* Alignment of :py:class:`Spectrum` objects (see `Spectrum.align_to <https://dysh.readthedocs.io/en/release-0.4.0/reference/modules/dysh.spectra.html#dysh.spectra.spectrum.Spectrum.align_to>`_)
* Calibration of Nod observations (see `GBTFITSLoad.getnod() <https://dysh.readthedocs.io/en/release-0.4.0/reference/modules/dysh.fits.html#dysh.fits.gbtfitsload.GBTFITSLoad.getnod>`_)
* Selection of baseline inclusion and exclusion ranges using units
* Flagging (see `flagging recipe <https://dysh.readthedocs.io/en/release-0.4.0/how-tos/examples/flagging.html>`_)
* Metadata management (see `modifying metadata recipe <https://dysh.readthedocs.io/en/release-0.4.0/how-tos/examples/metadata_management.html>`_)
* Reading and writing data (see `saving data recipe <https://dysh.readthedocs.io/en/release-0.4.0/how-tos/examples/dataIO.html>`_)
* Logging functionality
* Data reduction history
* Online and offline modes
* Gain correction classes
* Updates to the documentation
* Drop support for `Python3.8` and `Python3.9`
* Bug fixes

Full change log
===============

To see a detailed list of all changes in version 0.4, including changes in
API, please see the :ref:`changelog`.