Compatibility with photutils 0.7; other small changes.
0.3.3
Include 'make_figure' function; define all pixel positions at lower-left corners (instead of centers), for consistency with other image processing tools.
0.3.2
Include Gini-M20 merger statistic; change the definitions of some quantities (e.g. smoothness).
0.3.1
A couple of minor fixes; include package data (for tests) in setup.py.
0.3.0
Compatibility with scikit-image v0.14; some additional properties made public (e.g., shape measurements w.r.t. the centroid); proper handling of negative pixel values in some calculations.
0.2.1
Make some background properties public; introduce flux_circ and flux_petro.