Revision History

Changes from version 1.5 to 1.6

Made various performance improvements, courtesy of Nate Lust, from profiling how Piff is used by the LSST DM stack. (#184)

Allowed the weight and/or badpix images to be from different files than the main image. (#147, #183)
Changed some of the logging messages to be at a more appropriate level. Most things that had been WARNING are now INFO, and the things that were INFO are now VERBOSE, a new logging level that is more verbose than INFO, but less than DEBUG. Messages that really are legit warnings are still at the WARNING level. (#132, #182)
Made it possible to exclude some cross terms in BasisPolynomial interpolation. For instance, if x and y are both interpolated at 4th order, and color at 3rd order, it used to be the case that cross terms like x*color^2 and y^2*color would have to be included. Now you can specify what maximum order you want for any cross-combinations. (#180)
Made fit_flux=True the default when using init=zero. This fixes some confusing behavior when using the Sum PSF type (the typical reason one would want to use init=zero), where it was not obvious that fit_flux=True was also required for it to work correctly. (#179)

Added an appropriate logging message when the input images are too small to constrain a PixelGrid model. (#131, #181)