BUG: ndarray.conjugate broken for custom dtypes (unlike np.conjugate)
BUG: ndarray.conjugate broken for custom dtypes (unlike np.conjugate)

This is especially relevant to moble's numpy quaternion library, which
will silently fail to conjugate when using ndarray.conjugate.

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