Allows you to toggle "peaceful mode" at will. Please note that this mod is -not- tested with the new Space Age worlds. It may or may not work on them.
Mods introducing new content into the game.
Changes to enemies or entirely new enemies to deal with.
Edit the info.json to read "factorio_version": "1.1", in the zip file.
Thanks for the heads-up!
I've submitted a new version.