Systems can create entities and components during update

[osrf-migration]

Original report (archived issue) by Nate Koenig (Bitbucket: Nathan Koenig).

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A System has the ability to create new entities and components during the System update phase. This behavior is inconsistent with entity and component removal, which happens after the System update phase.

[osrf-migration]

Original comment by Nate Koenig (Bitbucket: Nathan Koenig).

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• set component to "GoodForNewcomers"

[osrf-migration]

Original comment by Nate Koenig (Bitbucket: Nathan Koenig).

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• removed "GoodForNewcomers" component

[osrf-migration]

Original comment by Louise Poubel (Bitbucket: chapulina, GitHub: chapulina).

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The RequestRemoveEntity mechanism is currently protecting entity removal. We may want to extend that logic to entity creation, as well as component creation / removal.