-------------------
New Features
^^^^^^^^^^^^
- ``wcs1d-fits`` loader now reads and writes boolean masks. [1051]
Bug Fixes
^^^^^^^^^
- Reimplementation of FluxConservingResampler. It is now faster and yields more accurate results. [1060]
- Fixed uncertainty calculations in centroid and gaussian width functions, also added an option
to use an ``astropy.uncertainty`` distribution instead of the analytic solution. [1057]
Other Changes and Additions
^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Drastically improved performance of region extraction. [1048]
- When creating a Spectrum1D object, it is enforced that the spectral axis is sorted and either
strictly increasing or decreasing. [1061]