cuda: update wrappers

re-compile dmi_wrapper

bench: add GTX 980 Ti results

work around cufft bug

This is the first mumax "community" release. It features Ahmad Syukri…

… bin Abdollah's conjugate gradient minimizer.

Final version of mumax.

v3.8beta1 fixes the closure caveat and an output race condition

mumax 3.7

undo adaptive time step with temperature, add CC5.2 code

v3.7beta brings adaptive time step with finite temperature