Losslessly optimise file size of mod assets#1140

NeRdTheNed wants to merge 5 commits intoAngry-Pixel:1.12-runesAngry-Pixel/The-Betweenlands:1.12-runesfrom

NeRdTheNed:1.12-devNeRdTheNed/The-Betweenlands:1.12-devCopy head branch name to clipboard