Fail earlier at registration, not resolve about swinjectautoregistration

[tkohout]

Hello John,
thanks for taking an interest in the library. I see your point in failing upon registering the optional, implicitly unwrapped service or service with too many dependencies. The reason why the check is not done in registration is performance. To check the type we actually have to parse the result of String(describing: Service.Type) using a simple TypeParser. That would negatively affect performance if it would have to be done for every registered service. Second reason is that these warnings were only meant as hints when something fails. There might be false positives which would prevent registering otherwise perfectly fine services.