Eea-converter

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* Change: Update to wkhtmltopdf 0.12.4 (add ----disable-smart-shrinking option)
[avoinea refs 97586]
* Change: updated URLs pointing to eea.europa.eu with https://
[alecghica refs 95849]
* Change: fix tests to run on Plone 4.3.17
[alecghica refs 96974]

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* Change: Possibility to group download info within AsyncInfo wrapper
[avoinea]

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* Change: Replace eeacms/zptlint with eeacms/plone-test:4 zptlint
[avoinea refs 90415]

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* Change: Remove Sphinx generated documentation
[petchesi-iulian refs 88212]
* Change: improved logging
[alecghica refs 88578]

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* Change: Remove hard-dependency on plone.stringinterp
[avoinea]
* Bug fix: Fixed imagemagick convert command, added colorspace parameter
and page number parameter
[zoltan_andras refs 85638]

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* Change: fixed PyLint warnings and errors
[valipod refs 84949]