Feature request moose.Function should be able to accept variables names which are just not x0, x1, .. y0, y1

Created by: subhacom

Currently moose.Function variables must be named as x0, x1, ...., or y0, y1, etc.. I suggest that in addition to this, moose.Function should also accept any keyword prefixed with var_ or v_ (or something similar) as variables. This will make expressions more readable e.g. var_CAMKII over x0 representing CAMKII etc.

Reported by: dilawar