test that we can parse Seq inside Maps
deprecating ArgApp

because App and DelayedInit seem to be in a limbo in scala 2.11.0:
"(Since version 2.11.0) DelayedInit semantics can be surprising.
Support for App will continue. See the release notes for more details:
https://github.com/scala/scala/releases/tag/v2.11.0-RC1"