This is the equivalent change in the swift4 module which was made in the swift3 module in this PR:
https://github.com/swagger-api/swagger-codegen/pull/6274
This updates AlamofireImplementations.mustache to handle when the response is an URL. It also makes changes in the generated sample code for:
* default configuration (no promisekit or rxswift)
* promisekit
* rxswift
Also, in order to build, the generated code needed to be updated with the change in CodableHelper which changes dataDecodingStrategy to ".base64" from its previous definition in earlier Xcode 9 betas.
*
* Add a swift4 client generator
* Updates per review comments:
- Changed Alamofire dependency from 4.0 to 4.5
- Added "Codable", "Encodable", and "Decodable" to list of reserved words in generator
- Ran "pod update" in default, promisekit, and rxswift samples test projects
