trac #16463 random parking function
trac #16463 better, now really a parking function
trac #16463 reviewers' comments
trac #16463 doc of characteristic quasisymmetric function
trac #16463 taking care of "Returns"
trac #16504: A mandatory 'nonnegative' argument for MixedIntegerLinearProgram.new_variable() until the standard changes
trac #16504: Tastes and colors ................
trac #16504: Broken doctest
trac #16504: additional doctest for nonnegative=False
Cosmetic changes
trac #16504: Updates the tutorial
trac #16504: Merged with beta5
trac #16504: Broken doctest
Trac #16504: A mandatory 'nonnegative' argument for MixedIntegerLinearProgram.new_variable() until the standard changes

This should create an unbounded real variable:
{{{
sage: p = MixedIntegerLinearProgram()
sage: x = p.new_variable(nonnegative=False)
}}}

We should see `nonnegative` as a toggle, not as a type. The following
should also work as expected intuitively:
{{{
sage: x = p.new_variable(integer=True, nonnegative=False)
sage: x = p.new_variable(integer=True, nonnegative=True)
}}}

URL: http://trac.sagemath.org/16504
Reported by: jdemeyer
Ticket author(s): Nathann Cohen
Reviewer(s): Jeroen Demeyer
trac #16541: New directory
Trac #16541: MOLS table : 10 000 integers

Here it is !

Nathann

New SPKG : http://www.steinertriples.fr/ncohen/tmp/combinatorial_designs
-20140630.tar.bz2

URL: http://trac.sagemath.org/16541
Reported by: ncohen
Ticket author(s): Nathann Cohen
Reviewer(s): Vincent Delecroix
Trac #16463: random_element for parking functions

implement a fast random parking function. The existing method is *rather
slow*

takes the opportunity to this also refactor the code doc for better
conformance to the coding standards;

URL: http://trac.sagemath.org/16463
Reported by: chapoton
Ticket author(s): Frédéric Chapoton
Reviewer(s): Aladin Virmaux