MAINT/BUG: Improve error messages for dtype reassigment, fix missing DECREF
MAINT/BUG: Improve error messages for dtype reassigment, fix missing DECREF

jorisvandenbossche/numpy,simongibbons/numpy,shoyer/numpy,rgommers/numpy,seberg/numpy,pbrod/numpy,pbrod/numpy,shoyer/numpy,grlee77/numpy,WarrenWeckesser/numpy,endolith/numpy,madphysicist/numpy,mattip/numpy,MSeifert04/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,mhvk/numpy,endolith/numpy,solarjoe/numpy,pizzathief/numpy,pizzathief/numpy,grlee77/numpy,jorisvandenbossche/numpy,madphysicist/numpy,jakirkham/numpy,jorisvandenbossche/numpy,solarjoe/numpy,ahaldane/numpy,Eric89GXL/numpy,mattip/numpy,numpy/numpy,pbrod/numpy,abalkin/numpy,jakirkham/numpy,shoyer/numpy,Eric89GXL/numpy,gfyoung/numpy,WarrenWeckesser/numpy,gfyoung/numpy,madphysicist/numpy,charris/numpy,MSeifert04/numpy,MSeifert04/numpy,shoyer/numpy,MSeifert04/numpy,abalkin/numpy,charris/numpy,mattip/numpy,seberg/numpy,pdebuyl/numpy,anntzer/numpy,tynn/numpy,shoyer/numpy,grlee77/numpy,grlee77/numpy,seberg/numpy,simongibbons/numpy,anntzer/numpy,numpy/numpy,jakirkham/numpy,tynn/numpy,Eric89GXL/numpy,endolith/numpy,ahaldane/numpy,charris/numpy,madphysicist/numpy,gfyoung/numpy,ahaldane/numpy,mhvk/numpy,jakirkham/numpy,madphysicist/numpy,jorisvandenbossche/numpy,numpy/numpy,solarjoe/numpy,anntzer/numpy,b-carter/numpy,Eric89GXL/numpy,pdebuyl/numpy,jakirkham/numpy,charris/numpy,WarrenWeckesser/numpy,numpy/numpy,mattip/numpy,mhvk/numpy,grlee77/numpy,ahaldane/numpy,simongibbons/numpy,rgommers/numpy,pbrod/numpy,b-carter/numpy,pbrod/numpy,seberg/numpy,rgommers/numpy,simongibbons/numpy,b-carter/numpy,abalkin/numpy,tynn/numpy,mhvk/numpy,mhvk/numpy,pdebuyl/numpy,pizzathief/numpy,pizzathief/numpy,WarrenWeckesser/numpy,anntzer/numpy,endolith/numpy,simongibbons/numpy,MSeifert04/numpy,ahaldane/numpy,rgommers/numpy,pdebuyl/numpy,pizzathief/numpy