Codex-africanus

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* Add wrapper for ducc0.wgridder (:pr:`204`)
* Correct Irregular Grid nesting in BeamAxes (:pr:`217`)

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* Convert WSClean Gaussian arcsecond and degree quantities to radians (:pr:`206`)
* Update classifiers and correct license in setup.py to BSD3 (:pr:`201`)

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* Support overriding the l and m axis sign in beam_grids (:pr:`199`)
* Upgrade to python-casacore 3.3.1 (:pr:`197`)
* Upgrade to jax 0.1.68 and jaxlib 0.1.47 (:pr:`197`)
* Upgrade to scipy 1.4.0 (:pr:`197`)
* Use github workflows (:pr:`196`, :pr:`197`, :pr:`198`, :pr:`199`)
* Make CASA parallactic angles thread-safe (:pr:`195`)
* Fix spectral model documentation (:pr:`190`), to match changes in (:pr:`189`)

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* Fix incorrect SPI calculation and make predict defaults MeqTree equivalent (:pr:`189`)
* Depend on pytest-flake8 >= 1.0.6 (:pr:`187`, :pr:`188`)
* MeqTrees Comparison Script Updates (:pr:`160`)
* Improve requirements handling (:pr:`187`)
* Use python-casacore wheels for travis testing, instead of kernsuite packages (:pr:`185`)

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* Add a dask Estimating Progress Bar (:pr:`182`, :pr:`183`)

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* Update trove to latest master commit (:pr:`178`)
* Added Cubic Spline support (:pr:`174`)
* Depend on python-casacore >= 3.2.0 (:pr:`172`)
* Drop Python 3.5 support and test Python 3.7 (:pr:`168`)
* Implement optimised WSClean predict (:pr:`166`, :pr:`167`, :pr:`177`, :pr:`179`, :pr:`180`, :pr:`181`)
* Simplify dask predict_vis code (:pr:`164`, :pr:`165`)
* Document and check weight shapes in simple gridder and degridder
(:pr:`162`, :pr:`163`)
* Restructuring calibration module (:pr:`127`)
* Upgrade to numba 0.46.0, using new inlining functionality
in the RIME and averaging code.
* Modified predict to be compatible with eidos fits headers (:pr:`158`)