Add test of actionAngleIsochroneInverse with veyr high eccentricity, to make Newton-Raphson fail and test fallback onto Brent
Add test of actionAngleIsochroneInverse with veyr high eccentricity, to make Newton-Raphson fail and test fallback onto Brent

jobovy/galpy,jobovy/galpy,jobovy/galpy,jobovy/galpy