v0.7.2

• Bugfix: statmorph was trying to measure the Petrosian radius even when it was beyond the boundaries of the image cutout, which was causing a crash with the error message "ValueError: f(a) and f(b) must have different signs".
• In this new version, when the Petrosian radius cannot be measured, an arbitrary value is returned and the flag property is set to a value of 2, which indicates a "bad" measurement.