- Update to 1.6.0
## General
* Following NEP 29, the minimum required Numpy is now 1.20.
[#1442]
* The minimum required Matplotlib is now 3.3.0. [#1442]
* The minimum required scikit-image is now 0.18.0. [#1442]
* The minimum required scikit-learn is now 1.0. [#1442]
## New Features
### photutils.aperture
* The ApertureStats class now accepts astropy NDData objects as
input. [#1409]
* Improved the performance of aperture photometry by 10-25%
(depending on the number of aperture positions). [#1438]
### photutils.psf
* Added a progress bar for fitting PSF photometry [#1426]
* Added a subshape keyword to the PSF-fitting classes to define
the shape over which the PSF is subtracted. [#1477]
### photutils.segmentation
* Added the ability to slice SegmentationImage objects. [#1413]
* Added mode and fill_value keywords to SourceCatalog
make_cutouts method. [#1420]
* Added segment_area source property and wcs, localbkg_width,
apermask_method, and kron_params attributes to SourceCatalog.
[#1425]
* Added the ability to use Quantity arrays with detect_threshold,
detect_sources, deblend_sources, and SourceFinder. [#1436]
* The progress bar used when deblending sources now is prepended
with “Deblending”. [#1439]
* Added “windowed” centroids to SourceCatalog. [#1447, #1468]
* Added quadratic centroids to SourceCatalog. [#1467, #1469]