Preflight of DUB 0.9.21 (RC 3)

[Sönke Ludwig]

DUB 0.9.21 is currently in the RC stage. Before tagging a release, I'd 
like it to get a little more exposure. Apart from checking if building 
works (dependencies are now built separately by default), there are two 
new features that could also benefit from more testing:

  - "dub test" will now automatically execute the unit tests of a
    package (see "dub test --help" for more information)

  - Sub packages can now be in sub folders (the recommended approach):

    "name": "somepack",
    "subPackages": {
        "subpack1/",
        "plugins/someplug/"
    }

    Those sub packages can be publicly referenced as a dependency for
    example as "somepack:subpack1" (assuming that the the package in
    "subpack1")

The binaries can be found on http://code.dlang.org/download ("Latest 
preview").

Pre-release thread on the DUB forum:
http://forum.rejectedsoftware.com/groups/rejectedsoftware.dub/thread/965/