Toast

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* Nothing yet

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* Update pybind11 to 2.7.1 to fix conda-forge builds (PR `490`_).

.. _`490`: https://github.com/hpc4cmb/toast/pull/490

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* Add support for generating observation matrices (PR `374`_).
* Allow the user to set fixed weather simulation parameters (PR `379`_).
* Optimizations in the ground telescope simulation code (PR `386`_).
* Support gain template fitting in the map making (PR `381`_).
* Fixes to scheduling observations of solar system objects (PR `408`_).
* Add support for simulating detector cross talk (PR `380`_).
* Add support for common mode filtering (PR `429`_).

.. _`374`: https://github.com/hpc4cmb/toast/pull/374
.. _`379`: https://github.com/hpc4cmb/toast/pull/379
.. _`386`: https://github.com/hpc4cmb/toast/pull/386
.. _`381`: https://github.com/hpc4cmb/toast/pull/381
.. _`408`: https://github.com/hpc4cmb/toast/pull/408
.. _`380`: https://github.com/hpc4cmb/toast/pull/380
.. _`429`: https://github.com/hpc4cmb/toast/pull/429

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* Fix typo in MKL cmake checks which broke OS X builds with MKL.
* Fix typo in toast_ground_schedule.py pipeline.

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* Restore support for directly using Intel MKL for FFTs (PR `371`_, `372`_).
* Fixed bug in wind velocity during atmosphere simulations.

.. _`371`: https://github.com/hpc4cmb/toast/pull/371
.. _`372`: https://github.com/hpc4cmb/toast/pull/372

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* Run serial unit tests without MPI. Fix bug in ground filter (PR `370`_).

.. _`370`: https://github.com/hpc4cmb/toast/pull/370