- Update to 6.0.1
## Bug Fixes
### astropy.coordinates
* Previously passing a SkyCoord instance to the
BaseCoordinateFrame separation() or separation_3d() methods
could produce wrong results, depending on what additional frame
attributes were defined on the SkyCoord, but now SkyCoord input
can be used safely. [#15659]
* Distance now accepts as parallax any angle-like value. This
includes types like Column which have a unit but are not
Quantity subclasses. [#15712]
* The new default for the class method SkyCoord.from_name() is to
look for coordinates first in SIMBAD, then in NED, and then in
VizieR, instead of having no specific order. [#16046]
### astropy.io.ascii
* Reading of CDS header files with multi-line descriptions where
the continued line started with a number was broken. This is
now fixed. [#15617]
* Ensure that the names of mixin columns are properly propagated
as labels for the MRT format. [#15848]
* Fixed reading IPAC tables for long column type on some
platforms, e.g., Windows. [#15992]
### astropy.io.fits
* Fix TDISP parsing for floating numbers. [#16007]
* Fix a crash when calling FITS writeto methods with stdout as
the output stream. [#16008]
* Fix TDISP parsing for floating numbers in formats ES / EN.
[#16015]
### astropy.stats
* Fix a spurious warning when calling sigma_clipped_stats on a