update changelog
update changelog

ljwolf/pysal_core,ljwolf/pysal,lixun910/pysal,hasecbinusr/pysal,pedrovma/pysal,sjsrey/pysal_core,pastephens/pysal,ljwolf/pysal_core,TaylorOshan/pysal,sjsrey/pysal,TaylorOshan/pysal,ljwolf/pysal,sjsrey/pysal_core,pastephens/pysal,jlaura/pysal,lixun910/pysal,ljwolf/pysal_core,ljwolf/pysal,hasecbinusr/pysal,jlaura/pysal,TaylorOshan/pysal,jlaura/pysal,weikang9009/pysal,pysal/pysal,hasecbinusr/pysal,sjsrey/pysal_core,lixun910/pysal,lanselin/pysal,pastephens/pysal