Flow spread can now range from 0.0 to 2.0 instead of just up to 1.0.
Flow spread can now range from 0.0 to 2.0 instead of just up to 1.0.

git-svn-id: 6df4de2eefc91e66a2e4972022441cb98a34e030@3063 86afb187-6117-0410-83e3-87b601379a31

JaneliaSciComp/Neuroptikon,JaneliaSciComp/Neuroptikon