Add test with fits.append
Add test with fits.append

aleksandr-bakanov/astropy,astropy/astropy,larrybradley/astropy,pllim/astropy,astropy/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,aleksandr-bakanov/astropy,pllim/astropy,saimn/astropy,saimn/astropy,larrybradley/astropy,StuartLittlefair/astropy,dhomeier/astropy,mhvk/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,saimn/astropy,lpsinger/astropy,dhomeier/astropy,mhvk/astropy,pllim/astropy,mhvk/astropy,astropy/astropy,astropy/astropy,mhvk/astropy,saimn/astropy,lpsinger/astropy,larrybradley/astropy,StuartLittlefair/astropy,lpsinger/astropy,astropy/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,mhvk/astropy,lpsinger/astropy,pllim/astropy,pllim/astropy,dhomeier/astropy,lpsinger/astropy,larrybradley/astropy,saimn/astropy,dhomeier/astropy