### What problem does this feature solve? currently I can't use vue-i18n in functional components... ```html <div class="banner_dl columns"> <a class="banner_dl_btn column is-narrow" href="" target="_blank" rel="noopener noreferrer"> <img src="http://placehold.it/218x64" :alt="$t('buttons.download_android')"> </a> <a class="banner_dl_btn column is-narrow" href="" target="_blank" rel="noopener noreferrer"> <img src="http://placehold.it/218x64" :alt="$t('buttons.download_ios')"> </a> </div> ``` ### What does the proposed API look like? there's no API for that, it just have to work out-of-the-box <!-- generated by vue-issues. DO NOT REMOVE -->