vue-meta 1.6.0 on Node.js NPM

Patches

ci: add .circleci (pooya parsa) (6f60512)
docs: add tips about inline script in README.md script example (#304) (William Chong) (bf7035b)
docs: fix CI link (Alexander Lichter) (2742965)
feat: don't generate title tag if title is empty (#334) (Xin Du (Clark)) (2141bab)
fix: follow html specs with regards to end tags (#314) (Pim) (a21037f)
fix: $meta is not defined in Vue interface type (#312) (Nicolas Igot) (9dfb001)
fix: type annotation for script tag (#305) (Taku Fukada) (f79f5b3)
🚢 CDN update (Sébastien Chopin) (f626a42)