change ovf2 header to "rectangular mesh v1.0"
mv ommf input to data
cleanup ovf1/ovf2 ambiguity
move OOMMF stuff to oommf package
oommf cleanup and code deduplication
oommf cleanup
stash
start ovf2 read
output proper (?) OVF2
notice energy density problem
ovf2 bugfix
clenaup average.go
ovf cleanup
fix ovf2 data ordering