better implementation of vcirc for lists of potentials, allowing negative contributions (#210)
better implementation of epifreq for lists of potentials, allowing negative contributions (#210)
better implementation of verticalfreq for lists of potentials, allowing negative contributions; fixes #210
for non-list potentials, use instance methods epifreq and verticalfreq for general functions (helps with interpRZPotential which doesn't implement the second derivatives but does implement the epifreq and verticalfreq (#201)
fix qdf documentation about dispersion scale lengths [ci skip]
some output to test travis on
rm print again
turn off other tests, print output, fail immediately
use exactly representable numbers when initializing brent zero finding
just pass the previous point to start Brent
restore travis.yml
rm print
Merge branch 'master' into dev-v1.1