1.3.0

Hey, tons of new stuff was added in this version, it's what I'd call the first "complete" version of nbtworkbench, I'd personally be using this as my full-time NBT editor since it does everything I'd want it to do.

• added autosave
• added check for closing the window with unsaved tabs
• enter to drop held entry
• enter to select text
• added tooltip effect to make it more readable
• fixed bug with snbt editing keys not escaping
• added list as root node kind
• added bedrock's little endian nbt format