DOC: add vstack, hstack, dstack reference to stack documentation.
DOC: add vstack, hstack, dstack reference to stack documentation.

drasmuss/numpy,ssanderson/numpy,bertrand-l/numpy,endolith/numpy,joferkington/numpy,jakirkham/numpy,maniteja123/numpy,chiffa/numpy,AustereCuriosity/numpy,gmcastil/numpy,rherault-insa/numpy,jakirkham/numpy,grlee77/numpy,SiccarPoint/numpy,gmcastil/numpy,jakirkham/numpy,skwbc/numpy,simongibbons/numpy,behzadnouri/numpy,skwbc/numpy,rgommers/numpy,MSeifert04/numpy,simongibbons/numpy,b-carter/numpy,bertrand-l/numpy,kiwifb/numpy,skwbc/numpy,kiwifb/numpy,charris/numpy,njase/numpy,chiffa/numpy,WarrenWeckesser/numpy,pdebuyl/numpy,maniteja123/numpy,rherault-insa/numpy,ahaldane/numpy,anntzer/numpy,shoyer/numpy,grlee77/numpy,abalkin/numpy,pbrod/numpy,MSeifert04/numpy,numpy/numpy,solarjoe/numpy,kiwifb/numpy,numpy/numpy,shoyer/numpy,SiccarPoint/numpy,argriffing/numpy,Eric89GXL/numpy,ahaldane/numpy,pizzathief/numpy,shoyer/numpy,behzadnouri/numpy,pbrod/numpy,jorisvandenbossche/numpy,behzadnouri/numpy,endolith/numpy,mattip/numpy,gfyoung/numpy,bertrand-l/numpy,WarrenWeckesser/numpy,mhvk/numpy,WarrenWeckesser/numpy,MSeifert04/numpy,jakirkham/numpy,ssanderson/numpy,njase/numpy,bringingheavendown/numpy,stuarteberg/numpy,ddasilva/numpy,seberg/numpy,MSeifert04/numpy,dwillmer/numpy,anntzer/numpy,stuarteberg/numpy,grlee77/numpy,tynn/numpy,b-carter/numpy,chatcannon/numpy,ddasilva/numpy,pdebuyl/numpy,simongibbons/numpy,mattip/numpy,mhvk/numpy,SiccarPoint/numpy,tynn/numpy,maniteja123/numpy,charris/numpy,ContinuumIO/numpy,pbrod/numpy,MSeifert04/numpy,shoyer/numpy,madphysicist/numpy,utke1/numpy,jorisvandenbossche/numpy,stuarteberg/numpy,joferkington/numpy,mhvk/numpy,gfyoung/numpy,mhvk/numpy,jakirkham/numpy,AustereCuriosity/numpy,abalkin/numpy,rgommers/numpy,ahaldane/numpy,charris/numpy,ddasilva/numpy,shoyer/numpy,chatcannon/numpy,njase/numpy,dwillmer/numpy,grlee77/numpy,joferkington/numpy,chatcannon/numpy,drasmuss/numpy,pizzathief/numpy,simongibbons/numpy,rherault-insa/numpy,stuarteberg/numpy,Eric89GXL/numpy,rgommers/numpy,charris/numpy,chiffa/numpy,seberg/numpy,AustereCuriosity/numpy,joferkington/numpy,madphysicist/numpy,jorisvandenbossche/numpy,anntzer/numpy,seberg/numpy,jorisvandenbossche/numpy,seberg/numpy,utke1/numpy,Eric89GXL/numpy,madphysicist/numpy,pizzathief/numpy,endolith/numpy,pdebuyl/numpy,ContinuumIO/numpy,endolith/numpy,ahaldane/numpy,ahaldane/numpy,argriffing/numpy,bringingheavendown/numpy,solarjoe/numpy,gfyoung/numpy,WarrenWeckesser/numpy,tacaswell/numpy,grlee77/numpy,pdebuyl/numpy,Eric89GXL/numpy,abalkin/numpy,b-carter/numpy,dwillmer/numpy,bringingheavendown/numpy,ContinuumIO/numpy,pizzathief/numpy,pbrod/numpy,madphysicist/numpy,rgommers/numpy,solarjoe/numpy,argriffing/numpy,ssanderson/numpy,tacaswell/numpy,utke1/numpy,gmcastil/numpy,tacaswell/numpy,pizzathief/numpy,madphysicist/numpy,simongibbons/numpy,mattip/numpy,pbrod/numpy,mattip/numpy,dwillmer/numpy,mhvk/numpy,anntzer/numpy,drasmuss/numpy,numpy/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,SiccarPoint/numpy,tynn/numpy,numpy/numpy