Logic roughed in for filaments [ci skip]
Logic roughed in for filaments [ci skip]

lanselin/pysal,TaylorOshan/pysal,pysal/pysal,sjsrey/pysal_core,schmidtc/pysal,chhao91/pysal,darribas/pysal,spreg-git/pysal,dfolch/pysal,spreg-git/pysal,weikang9009/pysal,hasecbinusr/pysal,lixun910/pysal,pastephens/pysal,ljwolf/pysal_core,badjr/pysal,lixun910/pysal,dfolch/pysal,ljwolf/pysal_core,darribas/pysal,sjsrey/pysal_core,hasecbinusr/pysal,jlaura/pysal,ljwolf/pysal_core,sjsrey/pysal,pedrovma/pysal,TaylorOshan/pysal,jlaura/pysal,TaylorOshan/pysal,sjsrey/pysal_core,schmidtc/pysal,ljwolf/pysal,jlaura/pysal,pastephens/pysal,nathania/pysal,ljwolf/pysal,badjr/pysal,pastephens/pysal,nathania/pysal,lixun910/pysal,chhao91/pysal,ljwolf/pysal,hasecbinusr/pysal