Fastspecfit

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*

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* A handful more bug fixes [`PR 207`_].
* Miscellaneous bug fixes revealed in Loa/Y3 processing [`PR 206`_].

.. _`PR 206`: https://github.com/desihub/fastspecfit/pull/206
.. _`PR 207`: https://github.com/desihub/fastspecfit/pull/207

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* Miscellaneous bug fixes [`PR 205`_].
* Pure-MPI implementation; new Podman container; bug fixes [`PR 203`_].
* Updated algorithm for updating QSO redshifts [`PR 201`_].
* Progress toward pure-MPI production code [`PR 200`_].
* Fix <1% bias in fluxes and EWs of tied and free doublet ratios [`PR 198`_].
* Backwards incompatible update to the data model; expanded unit tests [`PR 197`_].

.. _`PR 197`: https://github.com/desihub/fastspecfit/pull/197
.. _`PR 198`: https://github.com/desihub/fastspecfit/pull/198
.. _`PR 200`: https://github.com/desihub/fastspecfit/pull/200
.. _`PR 201`: https://github.com/desihub/fastspecfit/pull/201
.. _`PR 203`: https://github.com/desihub/fastspecfit/pull/203
.. _`PR 205`: https://github.com/desihub/fastspecfit/pull/205

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* Update theoretical [NII] 6548,84 and [OIII] 4959,5007 doublet ratios [`PR 195`_].
* Additional cleanups and speedups to the new Monte Carlo code [`PR 194`_].
* Implement a simplified idiom for Monte Carlo iteration [`PR 193`_].
* Merge two multiprocessing loops into one [`PR 192`_].
* Monte Carlo to estimate model parameters [`PR 189`_].
* Fix issues with log level retention [`PR 187`_].

.. _`PR 187`: https://github.com/desihub/fastspecfit/pull/187
.. _`PR 189`: https://github.com/desihub/fastspecfit/pull/189
.. _`PR 192`: https://github.com/desihub/fastspecfit/pull/192
.. _`PR 193`: https://github.com/desihub/fastspecfit/pull/193
.. _`PR 194`: https://github.com/desihub/fastspecfit/pull/194
.. _`PR 195`: https://github.com/desihub/fastspecfit/pull/195

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* Rewrite of the smooth continuum and continuum-flux algorithms [`PR 186`_].
* Miscellaneous bug fixes [`PR 185`_].
* Use Numba-based Resolution implementation with faster multiply.
Also tweak parameters of continuum least_squares optimizer for
speed. [`PR 181`_]
* Cache Fourier transforms of the templates for speed [`PR 180`_].
* Update line-list (drop broad HeI lines) and rest wavelengths [`PR 179`_].
* Near-total rewrite of both the continuum and emission-line fitting engines and
major updates to the organizational infrastructure of the code, all with the
goal of maximizing speed and accuracy [`PR 177`_].

.. _`PR 177`: https://github.com/desihub/fastspecfit/pull/177
.. _`PR 179`: https://github.com/desihub/fastspecfit/pull/179
.. _`PR 180`: https://github.com/desihub/fastspecfit/pull/180
.. _`PR 181`: https://github.com/desihub/fastspecfit/pull/181
.. _`PR 185`: https://github.com/desihub/fastspecfit/pull/185
.. _`PR 186`: https://github.com/desihub/fastspecfit/pull/186

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* Add support for processing a custom sample with full MPI [`PR 168`_].
* New optional inputs to ``mpi-fastspecfit``: ``--no-smooth-continuum``,
``--fphotodir``, and ``--fphotofile``.
* Documentation bug in ``LOGLNU`` definitions (reported by R. Hada).
* Add ``--zmin`` optional argument to ``fastspecfit``.
* Other miscellaneous changes committed directly to `main`.

.. _`PR 168`: https://github.com/desihub/fastspecfit/pull/168