Initial commit with Build
Add gitignore
Add BadShakespeareanActor
Add plane with EventSource from Chapter 5
Factor out EventSource and add tests
Remove self typing in EventSource
Add Avionics Specs from chapter 6
Add FlightAttendants and turn on debug
Disable life cycle debugging
Introduce crew package
Add Pilots
Add supervisors and providers (sec 8.5)
Finish refactoring of plane structure in section 8.5
CoPilot takes control if Pilot dies
AutoPilot watches for death of copilot
Autopilot takes control in case of death
Stateful FlightAttendant
Add HeadingIndicator
Test FlightAttendant's drink serving