Uncompressed blueprints

[tastybento]

This branch adds the ability to load uncompressed blueprints. This is a stepping stone to writing them and having the ability to be backwards compatible.

One of the reasons originally for using a zip file was because it could store multiple files and the thought was that blueprints could contain the whole bundle for a world and maybe other things too like icons. But it ended up just being a single file, so maybe it isn't required to compress them. However, we need to be backward compatible.