In 'fitsheader -f', remove keyword sorting capability.
In 'fitsheader -f', remove keyword sorting capability.

astropy/astropy,stargaser/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,pllim/astropy,pllim/astropy,lpsinger/astropy,MSeifert04/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,larrybradley/astropy,larrybradley/astropy,pllim/astropy,bsipocz/astropy,MSeifert04/astropy,saimn/astropy,lpsinger/astropy,mhvk/astropy,bsipocz/astropy,saimn/astropy,bsipocz/astropy,lpsinger/astropy,saimn/astropy,stargaser/astropy,mhvk/astropy,lpsinger/astropy,dhomeier/astropy,stargaser/astropy,saimn/astropy,dhomeier/astropy,pllim/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,mhvk/astropy,astropy/astropy,larrybradley/astropy,MSeifert04/astropy,bsipocz/astropy,StuartLittlefair/astropy,astropy/astropy,mhvk/astropy,lpsinger/astropy,saimn/astropy,astropy/astropy,mhvk/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,pllim/astropy,larrybradley/astropy,MSeifert04/astropy,astropy/astropy,dhomeier/astropy,dhomeier/astropy,stargaser/astropy,StuartLittlefair/astropy