Merge pull request happycube#379 from Gamnn/patch-3

Add completion message to ld-compress

copy in simon's rev7 change

early spin at happycube#217

Update README.md

write json at end

Update README.md

increase NTSC MTF level

enable 3d comb filtering at the end, shift frame slightly

enable 3d comb filtering at the end, shift frame slightly

Merge branch 'master' of github.com:happycube/ld-decode