Prep for v4.2.0 release

- Move 4.1 docs to 4.2
- Update versions everywhere to 4.1.3 with release script
- Manually bump the shorthand version in package.json
- Add 4.2 to the versions docs page
- Update some redirects
- Fix tests asset URLs
- Bump Nuget and more

site/_data/docs-versions.yml

@@ -36,7 +36,8 @@
 
 - group: v4.x
   baseurl: https://getbootstrap.com/docs
-  description: Current major release with two minor releases. Last update was v4.1.3.
+  description: Current major release with two minor releases. Last update was v4.2.0.
   versions:
     - v: 4.0
     - v: 4.1
+    - v: 4.2

site/_includes/docs-navbar.html

@@ -32,7 +32,8 @@
         v{{ site.docs_version }}
       </a>
       <div class="dropdown-menu dropdown-menu-right" aria-labelledby="bd-versions">
-        <a class="dropdown-item active" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/">Latest (4.1.x)</a>
+        <a class="dropdown-item active" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/">Latest (4.2.x)</a>
+        <a class="dropdown-item" href="https://getbootstrap.com/docs/4.2/">v4.2.0</a>
         <a class="dropdown-item" href="https://getbootstrap.com/docs/4.0/">v4.0.0</a>
         <div class="dropdown-divider"></div>
         <a class="dropdown-item" href="https://v4-alpha.getbootstrap.com/">v4 Alpha 6</a>

site/docs/4.2/about/overview.md

@@ -3,8 +3,8 @@ layout: docs
 title: About
 description: Learn more about the team maintaining Bootstrap, how and why the project started, and how to get involved.
 redirect_from:
-  - "/docs/4.1/about/"
-  - "/docs/4.1/history/"
+  - "/docs/4.2/about/"
+  - "/docs/4.2/history/"
 group: about
 ---