create new defineable methods to customize behaviour of NestedStateMachine

[kaduvert]

makes NestedStateMachine call onStateMachineEntered() / stateMachineUpdate() / onStateMachineExited() respectively on enter / update / exit events if they are defined

[rom1504]

this is a breaking change right?

[kaduvert]

~~no, it changes names of functions with internal logic, which is accounted for by renaming all internal references.~~

no.

[kaduvert]

i updated it so that instead of moving logic to make room for overwriting methods, it now just calls newly defineable methods if they're present

this now breaks nothing; only additions

[sefirosweb]

@kaduvert, if the bot exits 3 nested states, will it call them all respectively?

[kaduvert]

yes!