I don't know the answer to your question, however this seems like as good a place as any to provide some feedback on github integration.

I tried it out but felt that it was best left disabled. Why? Because pushing to my github repo would quietly overwrite any in-game changes I may have made, without confirmation, and without a way to retrieve them. This felt too dangerous to me, especially as I play from three different places (not at the same time).

This potential disaster could be avoided if there was a way for the game to push changes back into github. This would raise some issues around conflict resolution, but it would at least allow me to write code in-game and get it back into github easily, without running external scripts/tools.

The other concern I had was around the use of in-game branches and github branches. I may be wrong about this but it seems that github simply pulls changes from a single github branch into whatever the currently selected in-game branch is. This feels like it could be improved, with perhaps a mapping between github and in-game branches.

I think the concept of github integration is a winner, I just feel it needs a little more work to be safely useable.

Both myself and a friend have experienced the screeps Steam client running very "hot" CPU-wise on Mac OSX machines. Seems to become quite sluggish and unresponsive over the course of an hour or so (e.g. code editor lag, interactive console lag). The game seems to run much more efficiently and consistently in a Chrome browser window.

I think this would be really useful. In particular, it would help with the sort of testing where a small change is made, then run against a particular scenario, over and over. So either simulation save/snapshot and restore, or at least a way to "rewind" back to a particular tick, would be very useful.