chore: add cyberpunk demo

_config.theme.yml

@@ -8,8 +8,6 @@ logo: /img/logo.svg
 head:
     # URL or path to the website's icon
     favicon: /img/favicon.svg
-    # Canonical URL of the current page
-    canonical_url: 
     # Open Graph metadata
     # https://hexo.io/docs/helpers.html#open-graph
     open_graph:
@@ -68,7 +66,6 @@ head:
     meta:
         # Meta tag specified in <attribute>=<value> style
         # E.g., name=theme-color;content=#123456 => <meta name="theme-color" content="#123456">
-        - ''
     # URL or path to the website's RSS atom.xml
     rss: 
 # Page top navigation bar configurations

_config.yml

@@ -36,7 +36,7 @@ external_link: # Open external links in new tab
   field: post
 filename_case: 0
 render_drafts: false
-post_asset_folder: false
+post_asset_folder: true
 relative_link: false
 future: true
 highlight:

source/_posts/demo/Cyberpunk.md

@@ -0,0 +1,48 @@
+title: Cyberpunk Theme Variant
+date: 2018-10-22 19:23:58
+tags:
+- Demo
+variant: cyberpunk
+article:
+    highlight:
+        theme: qtcreator_dark
+thumbnail: /uncategorized/cyberpunk-theme-variant/CP77-KV-en.jpg
+---
+
+Icarus includes a new variant called Cyberpunk starting from version 3.0.0.
+The theme is inspired by the video game [Cyberpunk 2077](https://www.cyberpunk.net/us/en/) 
+developed by CD PROJEKT RED.
+This variant aims at providing a different Icarus experience to these who like dark-themed
+blogs.
+It should be noted that it uses recent web styling features that are not working properly 
+in some legacy browsers, including Internet Explorer and legacy Microsoft Edge.
+
+<!-- more -->
+
+To enable the Cyberpunk theme, please open your theme's `_config.yml` and make the following
+change:
+
+{% codeblock themes/icarus/_config.yml lang:diff %}
+- variant: default
++ variant: cyberpunk
+{% endcodeblock %}
+
+You may also want to change the theme of highlighted code blocks.
+In that case, you can find some dark highlight.js themes 
+[here](https://github.com/highlightjs/highlight.js/tree/master/src/styles).
+Copy the file name excluding the `.css` extension and put it in the `article.highlight.theme`
+option in Icarus' `_config.yml`.
+For example, if you want to change the theme to `xt256`, simply make the following edit:
+
+{% codeblock themes/icarus/_config.yml lang:diff %}
+# Article related configurations
+article:
+    highlight:
+-         theme: atom-one-light
++         theme: xt256
+{% endcodeblock %}
+
+Apart from the color palette, Icarus also used two image resources taken from the official 
+website of the game, which are placed on the top navigation bar and bottom page footer.
+If you wish to make further modifications to this theme variant, please take a look at
+`themes/icarus/source/css/cyberpunk.styl`.

source/_posts/theme/Configuring-Icarus.md

@@ -1,5 +1,5 @@
 title: Configuring Icarus
-date: 2018-10-22 19:23:58
+date: 2018-10-22 19:23:57
 thumbnail: /gallery/thumbnails/plant.jpg
 categories:
 - Configuration

themes/icarus

@@ -1 +1 @@
-Subproject commit 60ec7005b2e3e1e8ff248722dbdd09244caa1a86
+Subproject commit 06a10cca3c38b4361c2cd9d862e25de8acac2058