Adding List and Vector to form encoder lifters, AddArg

[blast-hardcheese]

Resolves #622

Verified in the console:

scala> implicitly[AddArg[Option[Vector[Long]]]]
res0: issues.issue622.Implicits.AddArg[Option[Vector[Long]]] = issues.issue622.Implicits$AddArg$$anon$1@269e559f

scala> res0.addArg
   def addArg(key: String,v: Option[Vector[Long]]): String

scala> res0.addArg("foo", Some(Vector(1, 2, 3, 4)))
res1: String = foo=1&foo=2&foo=3&foo=4

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[kelnos]

Are there any implications for Java here?

[blast-hardcheese]

This was explicitly to handle the java case 😅 package-info.java never seemed/seems to work for me, so this correctly does not emit the definitons.* import if the only protocolElems we have are just aliases

[kelnos]

Ah, neat. We can get rid of package-info.java entirely then.