add Prettier to workflow 🎀 (#128)

* prettier init

* prettier ignore

* run on everything 😬

* add prettier check script

* update deps

* Update .prettierignore

content/license.md

@@ -13,6 +13,7 @@ The [full license](https://creativecommons.org/licenses/by/4.0/legalcode) is re-
 
 ---
 
+<!-- prettier-ignore-start -->
 ## Creative Commons Attribution 4.0 International
 
 <p class="center"><svg width="120" height="42"><path d="M3.1.5l113.4.2c1.6 0 3-.2 3 3.2l-.1 37.3H.3V3.7C.3 2.1.4.5 3 .5z" fill="#aab2ab"/><path d="M117.8 0H2.2C1 0 0 1 0 2.2v39.3c0 .3.2.5.5.5h119c.3 0 .5-.2.5-.5V2.2c0-1.2-1-2.2-2.2-2.2zM2.2 1h115.6c.6 0 1.2.6 1.2 1.2v27.3H36.2a17.8 17.8 0 01-31.1 0H1V2.2C1 1.6 1.5 1 2.1 1z"/><path d="M73.8 32.7l.9.1.6.3.5.5.1.8c0 .3 0 .6-.2.8l-.7.6c.4 0 .7.3 1 .6l.2 1-.1 1-.6.5-.7.4H70.7v-6.6h3.1zm-.2 2.7c.3 0 .5 0 .7-.2l.2-.6v-.3l-.3-.3H74l-.4-.1h-1.4v1.5h1.5zm.1 2.8h.4l.4-.1.2-.3v-.4c0-.4 0-.6-.2-.8l-.8-.2h-1.6v1.8h1.6zM76.5 32.7h1.6l1.6 2.7 1.5-2.7H83l-2.5 4.1v2.6h-1.5v-2.6l-2.4-4zM34.3 19.6a13.6 13.6 0 01-27.3 0 13.6 13.6 0 0127.3 0z" fill="#fff"/><path d="M31.7 8.5c3 3 4.5 6.7 4.5 11.1a15.4 15.4 0 01-15.6 15.6 15 15 0 01-11-4.6 15 15 0 01-4.6-11c0-4.3 1.5-8 4.6-11.1 3-3 6.7-4.5 11-4.5 4.4 0 8 1.5 11.1 4.5zm-20 2a12.5 12.5 0 00-3.9 9.1c0 3.5 1.3 6.5 3.8 9s5.6 3.8 9 3.8c3.5 0 6.6-1.3 9.2-3.8a12 12 0 003.6-9c0-3.6-1.2-6.6-3.7-9a12.3 12.3 0 00-9-3.8c-3.6 0-6.6 1.2-9 3.7zm6.7 7.6c-.4-.9-1-1.3-1.8-1.3-1.4 0-2 1-2 2.8 0 1.8.6 2.8 2 2.8 1 0 1.6-.5 2-1.4l1.9 1a4.4 4.4 0 01-4.1 2.5c-1.4 0-2.5-.5-3.4-1.3-.8-.9-1.3-2-1.3-3.6 0-1.5.5-2.7 1.3-3.5 1-1 2-1.3 3.3-1.3 2 0 3.3.7 4.1 2.2l-2 1zm9 0c-.4-.9-1-1.3-1.8-1.3-1.4 0-2 1-2 2.8 0 1.8.6 2.8 2 2.8 1 0 1.6-.5 2-1.4l2 1a4.4 4.4 0 01-4.2 2.5c-1.4 0-2.5-.5-3.3-1.3-.9-.9-1.3-2-1.3-3.6 0-1.5.4-2.7 1.3-3.5.8-1 2-1.3 3.2-1.3 2 0 3.3.7 4.2 2.2l-2.1 1z"/><g transform="matrix(.99377 0 0 .99367 -177.7 0)"><circle cx="255.6" cy="15.3" r="10.8" fill="#fff"/><path d="M258.7 12.2c0-.4-.4-.8-.8-.8h-4.7c-.5 0-.8.4-.8.8V17h1.3v5.6h3.6V17h1.4v-4.8z"/><circle cx="255.5" cy="9.2" r="1.6"/><path clip-rule="evenodd" d="M255.5 3.4c-3.2 0-6 1.1-8.2 3.4A11.4 11.4 0 00244 15c0 3.2 1.1 6 3.4 8.2 2.3 2.3 5 3.4 8.2 3.4 3.2 0 6-1.1 8.4-3.4a11 11 0 003.3-8.2c0-3.3-1.1-6-3.4-8.3-2.2-2.3-5-3.4-8.3-3.4zm0 2.1c2.7 0 5 1 6.8 2.8a9.2 9.2 0 012.8 6.8c0 2.7-1 4.9-2.7 6.7-2 1.9-4.2 2.8-6.8 2.8-2.7 0-5-1-6.8-2.8A9.2 9.2 0 01246 15c0-2.6 1-4.9 2.8-6.8a9 9 0 016.8-2.8z" fill-rule="evenodd"/></g></svg></p>
@@ -173,3 +174,4 @@ d. Nothing in this Public License constitutes or may be interpreted as a limitat
 > Creative Commons is not a party to its public licenses. Notwithstanding, Creative Commons may elect to apply one of its public licenses to material it publishes and in those instances will be considered the "Licensor." The text of the Creative Commons public licenses is dedicated to the public domain under the [_CC0 Public Domain Dedication_](https://creativecommons.org/publicdomain/zero/1.0/legalcode). Except for the limited purpose of indicating that material is shared under a Creative Commons public license or as otherwise permitted by the Creative Commons policies published at [creativecommons.org/policies](https://creativecommons.org/policies), Creative Commons does not authorize the use of the trademark "Creative Commons" or any other trademark or logo of Creative Commons without its prior written consent including, without limitation, in connection with any unauthorized modifications to any of its public licenses or any other arrangements, understandings, or agreements concerning use of licensed material. For the avoidance of doubt, this paragraph does not form part of the public licenses.
 >
 > Creative Commons may be contacted at [creativecommons.org](https://creativecommons.org/).
+<!-- prettier-ignore-end -->