Added some tests for Iterable.string (#202)
Added some tests for Iterable.string (#202)

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