* raimo/kernel/gen_statem-progress/OTP-14114:
  Make code_change/4 optional
  Implement fallback for terminate/3
  Clarify code_change and callback mode change
  Stop pampering with stacktraces
  Clean up timer handling
  Remove event timer optimization
  Clean up timer handling
  Reduce number of loop variables hence code mass
  Optimize by using async cancel_timer
  Bugfix: callback mode not cached after code change
  Implement repeat_state and repeat_state_and_data
  Correct type checking function for action {next_event,,}
  Change arity of type to init_result/1

* reith/erts/c_port_driver_tutorial_fix/PR-1281:
  fix library open error in linked-in port driver tutorial

Small map was wrong as we should include our own top Eterm and exclude
them for keys and values.

Large maps was wrong as it described the theoretical minimum of a
full tree, which does not happen in reality.