Remove inheritance from recently-removed ScaledFlux class
Register fields with new aperture correction system.
Adapt to change in aperture correction registry interface
Merge branch 'u/jbosch/DM-191'
tests: reactivate test assertions

Test failures weren't firing after being disabled in changeset 4cc24ba9.
tests: check that forced photometry produces the same result as unforced
fix forced aperture under scaling

Need to set the proper size before transformation, since the input
Kron radius is in the frame of the reference image.
tests: add test for forced photometry under rotation, translation, scaling

Factored out some common code into functions.
tests: add argument parser for setting display, verbose
reactivate test assertions in a reversible way

Unlike dac1ed65, this fix enables a developer to see all the tests that are
failing. It is now longer possible to accidently leave this on, as that
will itself generate a test failure.
Clarified the logic used to find the Kron aperture

The FootprintFindMoment returns the mean elliptical radius, i.e. the major
axis (although it was called the radius...).  Cleaned things up to be clearer.
Fixed a sqrt(2) error in estimating an aperture from a Footprint's shape
Merge branch 'tickets/HSC-865'
Set flux.kron.flags.radius when we fail to measure the radius

HSC-962
Merge branch 'tickets/HSC-962'