Fix Range.rest for ranges of size 1
Fix Range.rest for ranges of size 1

lucaswerkmeister/ceylon.language,unratito/ceylon.language,lucaswerkmeister/ceylon.language,ceylon/ceylon.language,unratito/ceylon.language,jvasileff/ceylon.language,jvasileff/ceylon.language,ceylon/ceylon.language