The 'lpsolver' mixed integer linear program (MILP) solver, integrating functionality from the lpsolve library (http://lpsolve.sourceforge.net/5.5) has been updated for compatibility with v.5 of NetLogo and has also received a facelift of its own. Problems may be formulated as both max and min, and the ability to calculate a sensitivity analysis of the duals has been integrated (still in work, likely some bugs). Links are on the NetLogo Extensions wiki.
The multiple random number generator extension was also recently updated. This extension provides the ability to implement multiple independent random number streams and also broadens the random distributions available to the user (adds Beta, Negative Binomial and Von Mises in addition to the distributions already incorporated into NetLogo), utilizing the same Colt libraries already leveraged by NetLogo.