Move everything to dub. Not perfect but workable setup.

2 build scripts to run dub and copy over some files.
Will get rid of them once makes up its mind on building
all of subpackages in one go.
Fix deprecation warnings: switch fallthrough, empty statements, const --> enum.

Also make use of undead, start with regexp.
Build release by default
Switch to undead.date
Merge pull request #3 from DmitryOlshansky/dubify

Dubify