DOC: add timedelta64 signature
DOC: add timedelta64 signature

WarrenWeckesser/numpy,grlee77/numpy,pizzathief/numpy,simongibbons/numpy,jakirkham/numpy,numpy/numpy,jakirkham/numpy,numpy/numpy,madphysicist/numpy,charris/numpy,madphysicist/numpy,madphysicist/numpy,MSeifert04/numpy,numpy/numpy,MSeifert04/numpy,grlee77/numpy,MSeifert04/numpy,endolith/numpy,seberg/numpy,endolith/numpy,WarrenWeckesser/numpy,jakirkham/numpy,rgommers/numpy,endolith/numpy,anntzer/numpy,WarrenWeckesser/numpy,abalkin/numpy,mattip/numpy,charris/numpy,grlee77/numpy,mattip/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,madphysicist/numpy,anntzer/numpy,mattip/numpy,pbrod/numpy,mhvk/numpy,seberg/numpy,simongibbons/numpy,mhvk/numpy,endolith/numpy,rgommers/numpy,jorisvandenbossche/numpy,abalkin/numpy,MSeifert04/numpy,pbrod/numpy,pizzathief/numpy,anntzer/numpy,jorisvandenbossche/numpy,WarrenWeckesser/numpy,pizzathief/numpy,pdebuyl/numpy,pbrod/numpy,jakirkham/numpy,pbrod/numpy,simongibbons/numpy,simongibbons/numpy,mhvk/numpy,pizzathief/numpy,jakirkham/numpy,mhvk/numpy,rgommers/numpy,grlee77/numpy,pdebuyl/numpy,mhvk/numpy,grlee77/numpy,anntzer/numpy,pdebuyl/numpy,charris/numpy,MSeifert04/numpy,jorisvandenbossche/numpy,madphysicist/numpy,mattip/numpy,jorisvandenbossche/numpy,pbrod/numpy,abalkin/numpy,charris/numpy,pdebuyl/numpy,numpy/numpy,seberg/numpy,rgommers/numpy,simongibbons/numpy,seberg/numpy,pizzathief/numpy