Add working and tested Castle.Plug access.
Clean Castle.Plug source.
Fix item signals. Fully working core.
Fix and clean castle/tests.
Update IOs to Logger.debug.
Stub Bot GenServer plumbing.
Fix/refx Signal path/item. Add peer-level Castle GenServer boost? to Castle.x signals.
Fix Item. Add/stub Cake and Hug.
Add basic Plug splash signal/result output.
Add URL-based signal search/exe.
Cleanup Castle.Plug.
Test and cleanup Castle signal and exe + bang methods.
Clean repo. Update logger.
Update Castle/CPU system to work and make sense.
Fix system.md and other small source cleanups.
Rename CPU to Castle.Machine :)
Update to Signal style.
Update machine/game references.
Update styles to sleek. Add project todo. Update gitignore.
Merge /tmp/ilvmx