v0.999995 co-op

This game was started as a spiritual successor to Red Rogue and evolved into something else as ranged attacks took over. It seemed appropriate to add something similar to Red's minion.

To tighten up the game further I've removed what used to be the first level. Its function was to ease new players in, but we have a tutorial mode. This cut means you can start level 2 with ammo from level 1 outside your hut, it gives level 1 a purpose. 

I am near the total of chunks required to declare a full release. There are some remaining issues to stamp out and co-op needs further testing, but I hope to release before the end of this year.