* [Swift] Update Alamofire version and update tests and Swift version to 4.2 for default and RxSwift variants
* Update promiseKit for Swift 4.0
* Update project files.
* Merge branch 'master' of https://github.com/OpenAPITools/openapi-generator into OpenAPITools-master
# Conflicts:
# samples/client/petstore/swift4/default/SwaggerClientTests/SwaggerClient.xcodeproj/project.pbxproj
* Merge in latest master
* Remove typo in bash file
* 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