Changes are made in REVO algorithm to make spread value unitless.
Changes are made in REVO algorithm to make spread value unitless.

Add distance characteristic parameter to REVO which is the average
distance between walkers for one cycle run. In spread function the
distances are divided by this value that makes spread value
unitless.

ADicksonLab/wepy,ADicksonLab/wepy,ADicksonLab/wepy