Feat/rehype-citation (#270)

* feat: add rehype-citation and upgrade to next 12.0.3

* docs: update docs

data/blog/introducing-tailwind-nextjs-starter-blog.mdx

@@ -1,7 +1,7 @@
 ---
 title: 'Introducing Tailwind Nextjs Starter Blog'
 date: '2021-01-12'
-lastmod: '2021-09-08'
+lastmod: '2021-11-14'
 tags: ['next-js', 'tailwind', 'guide']
 draft: false
 summary: 'Looking for a performant, out of the box template, with all the best in web technology to support your blogging needs? Checkout the Tailwind Nextjs Starter Blog template.'
@@ -51,6 +51,7 @@ I wanted it to be nearly as feature-rich as popular blogging templates like [bea
 - [MDX - write JSX in markdown documents!](https://mdxjs.com/)
 - Server-side syntax highlighting with line numbers and line highlighting via [rehype-prism-plus](https://github.com/timlrx/rehype-prism-plus)
 - Math display supported via [KaTeX](https://katex.org/)
+- Citation and biliography support via [rehype-citation](https://github.com/timlrx/rehype-citation)
 - Automatic image optimization via [next/image](https://nextjs.org/docs/basic-features/image-optimization)
 - Flexible data retrieval with [mdx-bundler](https://github.com/kentcdodds/mdx-bundler)
 - Support for tags - each unique tag will be its own page

data/blog/new-features-in-v1.mdx

@@ -1,11 +1,12 @@
 ---
 title: 'New features in v1'
 date: 2021-08-07T15:32:14Z
-lastmod: '2021-10-27'
+lastmod: '2021-11-14'
 tags: ['next-js', 'tailwind', 'guide']
 draft: false
 summary: 'An overview of the new features released in v1 - code block copy, multiple authors, frontmatter layout and more'
 layout: PostSimple
+bibliography: references-data.bib
 ---
 
 ## Overview
@@ -329,7 +330,7 @@ To modify the styles, change the following class selectors in the `tailwind.css`
 }
 ```
 
-## Newletter component
+## Newletter component (v1.1.3)
 
 Introduced in v1.1.3, the newsletter component gives you a easy way to build an audience. It integrates with the following providers:
 
@@ -354,6 +355,37 @@ and is not compatible with a 100% static site export. Users should either self-h
 
 A static site compatible alternative is to substitute the route in the newsletter component with a form API endpoint provider.
 
+## Bibliography and Citations (v1.2.1)
+
+`rehype-citation` plugin is added to the xdm processing pipeline in v1.2.1. This allows you to easily format citations and insert bibliography from an existing bibtex or CSL-json file.
+
+For example, the following markdown code sample:
+
+```md
+Standard citation [@Nash1950]
+In-text citations e.g. @Nash1951
+Multiple citations [see @Nash1950; @Nash1951, page 50]
+
+**References:**
+
+[^ref]
+```
+
+is rendered to the following:
+
+Standard citation [@Nash1950]  
+In-text citations e.g. @Nash1951  
+Multiple citations [see @Nash1950; @Nash1951, page 50]
+
+**References:**
+
+[^ref]
+
+A bibliography will be inserted at the end of the document, but this can be overwritten by specifying a `[^Ref]` tag at the intended location.
+The plugin uses APA citation formation, but also supports the following CSLs, 'apa', 'vancouver', 'harvard1', 'chicago', 'mla', or a path to a user-specified CSL file.
+
+See [rehype-citation readme](https://github.com/timlrx/rehype-citation) for more information on the configuration options.
+
 ## Upgrade guide
 
 There are significant portions of the code that has been changed from v0 to v1 including support for layouts and a new mdx engine.