Collective-contentrules-mail

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- Nothing changed yet.

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- Ported tests to plone.app.testing
[tomgross]

- Plone 4.3 compatibiliy
[tomgross]

- Moved to https://github.com/collective/collective.contentrules.mail
[maurits]

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* Remove an extra From header when calling mailhost.secureSend()
[dimboo]

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* Added an exception in IVocabularyFactory import for Plone >= 4.1.
[lepri]

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* Avoid a site error if the mail cannot be sent, e.g. because the mail
server is down.
[optilude]

* Avoid throwing an exception on encoded strings in the replacer.
[optilude]

* Caught workflow exception when trying to get state on object without any
workflow.
[tiazma]

* Added cc and bcc fields to IMailAction enabling the use of these fields in
mail messages
[erico_andrei]

* Added new variables to IMailReplacer so it is possible to send emails to
users with other roles than owner on the object
[erico_andrei]

* Made sure Archetypes content implements IDublinCore (It's not the default
behavior until AT 1.5.10)
[erico_andrei]

* Correct action mail fail on try to replace bcc or cc when it returns None [lucmult]

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* Added a note in the UI about how to use variables.
[optilude]

* The 'source' field is not required, but would throw an error if not filled
in. This is now fixed.
[optilude]