decontainerize type constraints in Attribute.new
Fix (Bag|BagHash).roll(*)
Implement (Bag|BagHash).pickpairs
implement winner syntax and WINNER sub.
update usages of winner in the setting
Fix (Bag|BagHash).pickpairs

Found thanks to writing tests  :-)
Make sure we roast winner.t
a single named positional is fine for done/more, too.
chase lots of changes to winner:

- all the statements are now in the new class "combinator_declarator"
- "later" is now called "wait" and always takes a parameter.
- "combine parses, but throws NYI for now.
A friendly reminder that we have a release soon
the previous attempt was intent on TTIAR'ing :(
[doc] extend ChangeLog a bit
Remove winner.t for now, will get merged if needed
Make sure we test winner.t in WINNER branch
Some ChangeLog updates, tomorrow we have a release
Create stub for announcement 2013.11
Made 2013.11 announcement up-to-date
[announce] clean up contributor list
logged changes of run/shell and infix:<...>
typo