TST: Add deprecation testcase for int-via-float in loadtxt
TST: Add deprecation testcase for int-via-float in loadtxt

mattip/numpy,numpy/numpy,anntzer/numpy,numpy/numpy,rgommers/numpy,rgommers/numpy,mhvk/numpy,pdebuyl/numpy,rgommers/numpy,charris/numpy,anntzer/numpy,pdebuyl/numpy,mhvk/numpy,pdebuyl/numpy,rgommers/numpy,charris/numpy,endolith/numpy,mattip/numpy,anntzer/numpy,pdebuyl/numpy,numpy/numpy,charris/numpy,mhvk/numpy,anntzer/numpy,mattip/numpy,endolith/numpy,endolith/numpy,numpy/numpy,charris/numpy,mattip/numpy,mhvk/numpy,endolith/numpy,mhvk/numpy