Wolfgang Berger 500f41902e Feature/objc tasks 2.3.0 (#3522)
* change api and ApiClient to return cancellable NSURLSessionTasks instead of NSNumber

* define a configuration protocol for custom configurations, which can be passed to api clients instead of a global configuration, provide a default implementation with a singleton option

* integrate a workaround for a current JSONModel concurrency bug

* update to new ISO8601 pod

* add missing call to super

* integrate new templates into codegen

* updates documentation templates

* updates petstore objc generated code

* fixes objc client tests
2016-08-16 21:15:23 +08:00
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