Separate out Phobos and Tango.
Remove std.ascii import.
Remove std.exception import.
Remove std.file import, and reintroduce missing enforce function.
Remove std.utf import.
Remove std.math import.
Remove std.container import.
Remove std.getopt import.
Phobos getopt not needed.
Remove std.typecons import.
Remove std.typetuple import.
Remove std.traits import.
Piece of shit
Just use Phobos for now.