Changed release date from 12 to 13.
Changed release date from 12 to 13.

svn path=/trunk/StrategoXT/; revision=131

metaborg/strategoxt,lichtemo/strategoxt,lichtemo/strategoxt,metaborg/strategoxt,Apanatshka/strategoxt,Apanatshka/strategoxt,Apanatshka/strategoxt,metaborg/strategoxt,lichtemo/strategoxt,Apanatshka/strategoxt,lichtemo/strategoxt,metaborg/strategoxt,Apanatshka/strategoxt,metaborg/strategoxt,lichtemo/strategoxt