I just put dub 1.0.0, dmd 2.071.1 on a brand new instance of Ubuntu 16.04 and when I made a new vibe.d project with dub, and built it by typing dub in its home directory there were a couple of dozen "deprecation:" messages of the form "vibe.blah1.blah2.thingy is not visible from module whatsit". Should I be concerned about this? e.g. when dmd is upgraded?
