Nice work. One small issue link to Unrestricted Unions

http://dlang.org/changelog/2.072.0.html#unrestricted_unions does not work

First beta for the 2.072.0 release.

This release comes with many new phobos features, native TLS support on
OSX, the first bunch of @safety enhancements (try -transition=safe), and
a few smaller language and compiler additions.

This is also the first dmd release to include dub.

http://dlang.org/download.html#dmd_beta
http://dlang.org/changelog/2.072.0.html

Unfortunately we still need to resolve a regression that causes issues
with EncodingScheme.create
(https://issues.dlang.org/show_bug.cgi?id=16291), you might run into
problems when using std.net.curl.

In case you run into a yet unknown module cycle, this is
likely due to the fixed cycle detection.
We're still working on a -DRT-cyclecheck=printonly switch to allow
making those non-fatal.
https://github.com/dlang/druntime/pull/1602#issuecomment-248447332

Please report any bugs at https://issues.dlang.org

-Martin