Basic lowpass filter
Background removal stuff, sort of works kinda
Side by side background and binary diff
Need to fix background
Blur
Don’t restrict background averaging to just not-targets
Bit of a refactor
Tidy
Minor tweaks (now false objects never get removed)
Merge remote-tracking branch 'origin/feature/background_removal' into Optimisations

Conflicts:
	src/css/style.sass
	src/index.html
	src/js/fishcv.coffee