metallic extractor saves outbuf to NBT
add trait for managing description packets
remove description packet from metallic extractor
gui textures for metallic extractor
generate png for metallic extractor
add base container code
add trait for standard GUI
add lwjgl to libraries
add inventory to metallic extractor
finish up GUI
index player slots correctly
put gui texture in correct location
add outputs to metallic extractor
remove debug prints
outsource merging to separate method
prevent shift-clicking into extractor output
make sure to draw super
add progress to metallic extractor
add syncing of progress bar
add rendering of progress bar