[WIP] Website reorg & reboot

404.html

@@ -0,0 +1,25 @@
+---
+permalink: /404.html
+layout: default
+---
+
+<style type="text/css" media="screen">
+  .container {
+    margin: 10px auto;
+    max-width: 600px;
+    text-align: center;
+  }
+  h1 {
+    margin: 30px 0;
+    font-size: 4em;
+    line-height: 1;
+    letter-spacing: -1px;
+  }
+</style>
+
+<div class="container">
+  <h1>404</h1>
+
+  <p><strong>Page not found :(</strong></p>
+  <p>The requested page could not be found.</p>
+</div>

Gemfile

@@ -1,24 +1,37 @@
-source 'https://rubygems.org'
+source "https://rubygems.org"
+# Hello! This is where you manage which Jekyll version is used to run.
+# When you want to use a different version, change it below, save the
+# file and run `bundle install`. Run Jekyll with `bundle exec`, like so:
+#
+#     bundle exec jekyll serve
+#
+# This will help ensure the proper Jekyll version is running.
+# Happy Jekylling!
+gem "jekyll", "~> 4.3.3"
+# This is the default theme for new Jekyll sites. You may change this to anything you like.
+gem "minima", "~> 2.5"
+# If you want to use GitHub Pages, remove the "gem "jekyll"" above and
+# uncomment the line below. To upgrade, run `bundle update github-pages`.
+# gem "github-pages", group: :jekyll_plugins
+# If you have any plugins, put them here!
 group :jekyll_plugins do
-    gem 'jekyll'
-    gem 'jekyll-archives'
-    gem 'jekyll-diagrams'
-    gem 'jekyll-email-protect'
-    gem 'jekyll-feed'
-    gem 'jekyll-imagemagick'
-    gem 'jekyll-minifier'
-    gem 'jekyll-paginate-v2'
-    gem 'jekyll-scholar'
-    gem 'jekyll-sitemap'
-    gem 'jekyll-target-blank'
-    gem 'jekyll-twitter-plugin'
-    gem 'jekyll-include-cache'
-    gem 'jemoji'
-    gem 'mini_racer'
-    gem 'unicode_utils'
-    gem 'webrick'
+  gem "jekyll-feed", "~> 0.12"
+  gem "jekyll-archives"
 end
-group :other_plugins do
-    gem 'httparty'
-    gem 'feedjira'
+
+# Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem
+# and associated library.
+platforms :mingw, :x64_mingw, :mswin, :jruby do
+  gem "tzinfo", ">= 1", "< 3"
+  gem "tzinfo-data"
 end
+
+# Performance-booster for watching directories on Windows
+gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]
+
+# Lock `http_parser.rb` gem to `v0.6.x` on JRuby builds since newer versions of the gem
+# do not have a Java counterpart.
+gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]
+
+# Theme(s)
+gem "minimal-mistakes-jekyll" # https://github.com/mmistakes/minimal-mistakes