Bumped Swift to Version 5.0

Bumped Swift to Version 5.0

Version 1.3

Bumped RxSwift to versions 4.+ and Swift to version 4.2

Version 1.2.3

Included #4.
Better dependency versioning

Version 1.2.2

Added support for RxSwift 3.1.0

Version 1.2.1

RxSwift 3.0.0 release

Version 1.1

Merged DRY refactoring and unit testing by @sergdort

Version 1.0

Initial release