Tuna 0.4.1 released

[curt <curt@...>]

Tuna 0.4.1 includes support for Win64 architecture (what a fun week it 
was learning x64 assembly, interesting stuff!) and has some performance 
tweaks for even faster stack swapping. Also added a few more examples 
and included VC2005 build support as well as the VC2010

Some API additions too, its all here: http://northarc.com/tuna

As ever, all feedback is welcome, including any suggestions for 
performance comparisons.

-Curt