cyclic includes crash genie

[scottr1634]

Cyclic includes are easy to do by mistake and are helpful in some situations, but they cause genie to crash. Need to track includes in a list and skip over includes we've already performed.

Simple example:
a.cmd includes b.cmd which includes a.cmd

Real world example:
stow.cmd includes unload.cmd for when you try to stow a loaded bow but unload.cmd includes stow.cmd for after you have unloaded to clear hands.

[mj-colonel-panic]

The fix for this is in the repo and it will be in the next build