- Include missing documentation (Rodrigo Moya)
- Fix retrieval of documents (Rodrigo Moya)
- Check existence of members before calling json_object_get_* to avoid
  warnings (Rodrigo Moya)
- Fixed basic attachments API (Rodrigo Moya)
- Deprecate CouchdbDocumentInfo class (Rodrigo Moya)

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Version 0.7.0
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