issue #112 fix mean of uniform
issue #112 fix mean of uniform

Anaphory/beast2,tgvaughan/beast2,Anaphory/beast2,tgvaughan/beast2,tgvaughan/beast2,tgvaughan/beast2,CompEvol/beast2,Anaphory/beast2,CompEvol/beast2,CompEvol/beast2,Anaphory/beast2,CompEvol/beast2