Merge pull request #1 from noahlh/news-update

Add link to talk about Svelte from a recent conference

site/content/blog/2021-01-01-whats-new-in-svelte-january-2021.md

@@ -74,6 +74,7 @@ As cautioned in _[What's the deal with SvelteKit?](https://svelte.dev/blog/whats
 - [Svelte for React Developers](https://soshace.com/svelte-for-react-developers/) explains Svelte's core concepts to folks who are used to React
 - [Building a Svelte Static Website with Smooth Page Transitions](https://www.youtube.com/watch?v=dvPfmcGtmrI&feature=emb_title) shows how to build a static website with Svelte and add smooth page transitions using Three.js and GSAP.
 - [Using Apollo Client in Sapper](https://bjornlu.com/blog/using-apollo-client-in-sapper/) explains the "simplest" solutions to integrate the Apollog query client into Sapper
+- [Reactive web apps with Crystal + Svelte](https://www.youtube.com/watch?v=i1xjLd6z7BU) explores how to build full-stack, server-rendered Svelte apps with a [Crystal](https://crystal-lang.org) backend
 
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