First Draft: Tuple Unpacking Syntax

[Richard (Rikki) Andrew Cattermole]

Overall quite good, just a couple of tweaks I'd prefer to have to make 
everyone's lives easier (such as custom runtime writers).



Proposal 3: Built-in tuple types and literals

Why are you putting it into object.d?

Its big enough as it is, and these types can be copied wholesale.

Putting them in a dedicated module would be a much better choice.



Proposal 6: Placeholder name _

This is guaranteed to break code, its going to have to wait for an 
edition to execute. No need to do it in two stages then.