Balladeer

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* Add folio module for generation of transcripts.
* Repin to turberfield-dialogue 0.46.1.
* Repin to turberfield-utils 0.47.0.

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* Repin to turberfield-dialogue 0.40.0.

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* Repin to turberfield-catchphrase 0.25.0.

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* Added optional Presenter factory parameter to Story.represent.
* Repin to turberfield-dialogue 0.39.0.
* Repin to turberfield-catchphrase 0.24.0.
* Repin to docutils 0.18.1.

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* Improve routing algorithm to avoid loops.

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* Repin to turberfield-dialogue.