Version 9.13.0

Changes:

• 2016-05-09: Deprecate SimpleDatastream [Justin Coyne]
• 2016-05-09: Use Deprecation.warn on AS::Concern ClassMethods [Justin Coyne]
• 2016-05-06: Add a Basic Container association [Justin Coyne]
• 2016-05-05: Renamed contains to has_subresource [Justin Coyne]
• 2016-05-05: Have generators create wrapper config files for test [Mark Bussey]
• 2016-05-05: Update solr_wrapper and fcrepo_wrapper dot-file defaults [Mark Bussey]
• 2016-05-05: Don't raise an error if you check if a detleted object is new [Justin Coyne]
• 2016-04-22: Extract ActiveFedora::InitializingConnection to lazy initialize the repository [Chris Beer]
• 2016-04-22: Use ensure instead of rescue + rethrow [Chris Beer]
• 2016-04-22: Suppress AF::Cleaner errors when running the test suite [Chris Beer]