dimensions as template parameter in all fluxes
first split flux implementation -- works, but not fully yet
implemented more usability features
moved ijk to cartesianpatch_common.h
implemented split flux
updated to current code structure and implemented damping template
ported from MOUSE
some changed for split fluxes
split fluxes working now
made update methods virtual
made update methods virtual
more changes for split flux/cell handling
struct for split flaces
1st order for split faces