shift->shiftx, with explicity clamp values
shift magnetization with explicit clamp values
add cuda/shiftx_wrapper.go
centerwall tests pass
shift: search edge mag only once, allow override
minor cleanup
API change: centerWall(comp)
rm poststep() api
minor cleanup
export geometry variable
shift cleanup
prepare for geom shift
ready to shift geomtery
shift: fix long-standing jitter issue
spaceFill() based on GPU volume
test/shiftgeom
region shift not working
log more to gui
add test/antenna.go
gui mutex and cleanup