Updated version to 1.16.0 for release.
Updated version to 1.17.0-SNAPSHOT for development towards next release.
Updated to support UUID's. /transfer transfers all yml chests to UUID's.

The command needs the permission alphachest.admin (default OP)

Removed nbt support from old legacy files. Not many people should have this problem unless they had not updated in a long time. If so run another version to migrate files at least once then run this.

I didn't spent much time on this so there might be bugs.
Updated to support UUID's.