New luatex release, 0.81.0

Hans already explained the changes on primitives;
I only add 
* new epdf.openMemStream(s,l,docid)
to create a pdf from a lightuserdata or  string.
(experimental, do not use in production.)

* uniform random generator in mplib is now specific for each numbersystem;

* too_precise implemented for binary number system;

* several bug fixes.



The archives can be downloaded from supelec as usual:

        https://foundry.supelec.fr/projects/luatex/

You could also check out the sources via anonymous svn:

  svn co --username anonsvn --password anonsvn              \
      https://foundry.supelec.fr/svn/luatex/tags/beta-0.81.0

Bugs and feature requests can be added to the issue tracker at

       http://tracker.luatex.org



Have fun,
Hans, Taco, Luigi