Ftw.pdfgenerator

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- Fix escaping of underscore in hyperlink labels. [jone]

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- Robustified URL conversion. [Rotonen]

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- Drop support for plone 4.2. [njohner]
- Handle vertical tab special character. [njohner]

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- Fix escaping issues for dash characters in hyperlink labels. [jone]

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- Fix encoding error by passing charset hint to BeautifulSoup when converting tables. [lgraf]

- Add Plone 5 compatibility. [phgross]

- Fixed exporting the zip and latex for pdfs who are setting the pdf title. [phgross]

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- Add possibility to set the pdf title via build arguments. [phgross]

- Support file objects in Builder.add_file. [jone]

- Drop Plone 4.1 support.