Prevent importing binary_dilation twice
Prevent importing binary_dilation twice

pllim/astropy,StuartLittlefair/astropy,lpsinger/astropy,mhvk/astropy,pllim/astropy,pllim/astropy,mhvk/astropy,StuartLittlefair/astropy,astropy/astropy,saimn/astropy,lpsinger/astropy,saimn/astropy,StuartLittlefair/astropy,astropy/astropy,larrybradley/astropy,lpsinger/astropy,lpsinger/astropy,pllim/astropy,mhvk/astropy,StuartLittlefair/astropy,mhvk/astropy,saimn/astropy,astropy/astropy,pllim/astropy,mhvk/astropy,saimn/astropy,larrybradley/astropy,larrybradley/astropy,larrybradley/astropy,StuartLittlefair/astropy,astropy/astropy,larrybradley/astropy,astropy/astropy,lpsinger/astropy,saimn/astropy