Fix doubled comma in CRTF output when range/corr is the only metadata - #700

Fix doubled comma in CRTF output when range/corr is the only metadata#700

larrybradley merged 2 commits into

astropy:mainastropy/regions:mainfrom

preller:fix-crtf-meta-only-commapreller/regions:fix-crtf-meta-only-commaCopy head branch name to clipboard