Major update, overhaul (basically) everything

.gitignore

@@ -15,5 +15,10 @@ _site/
 .jekyll-metadata
 
 # misc
+_gulp/
 _/
-TODOs.md
+TODOs.md
+tmp/
+
+# node
+node_modules/

Gemfile

@@ -1,16 +1,26 @@
 # frozen_string_literal: true
+
 source "https://rubygems.org"
 
-gem "jekyll", "~> 4.1"
+# NOTE: gems under `group :jekyll_plugins do` should be loaded irrespectively of
+# `_config.yml`, but for some unknown reason I couldn't make it work!
+# https://jekyllrb.com/docs/plugins/installation/
+# 
+# I am doing the following:
+# - alternative / forked versions of gems are specified below
+# - all other gems are specified in `.gemspec`
+# - jekyll plugins are loaded explicitly in `_config.yml`
+
+
+# alternative / forked versions of gems
 
-# sensible plugins
-gem "jekyll-feed"
-gem "jekyll-seo-tag"
-gem "jekyll-sitemap"
-gem "jekyll-optional-front-matter"
-gem "jekyll-redirect-from"
-gem "jekyll-archives"
-gem "jekyll-last-modified-at"
+gem "jekyll-feed", github: "drscream/jekyll-feed", branch: "feature/template-feed-xml"
+# also works:
+# gem "jekyll-feed", github: "drscream/jekyll-feed", ref: "refs/pull/362/head"
+
+# TODO: track if / when this PR will be merged into the main repo
+# - https://github.com/jekyll/jekyll-feed/pull/362  
 
 gem "katex", github: "lucasrla/katex-ruby"
-gem "kramdown-math-katex"
+
+gemspec

Gemfile.lock

@@ -1,24 +1,67 @@
+GIT
+  remote: https://github.com/drscream/jekyll-feed.git
+  revision: 5543314b93ef8e671fe79ee045a4fa0f971ed69f
+  branch: feature/template-feed-xml
+  specs:
+    jekyll-feed (0.16.0)
+      jekyll (>= 3.7, < 5.0)
+
 GIT
   remote: https://github.com/lucasrla/katex-ruby.git
   revision: 5125cdbbef52a640846e5a27114459ae97f0cfb9
   specs:
     katex (0.6.3)
       execjs (~> 2.7)
 
+PATH
+  remote: .
+  specs:
+    papicu (0.1.0)
+      classifier-reborn (~> 2.2.0)
+      gsl (~> 2.1.0)
+      jekyll (~> 4.1)
+      jekyll-archives (~> 2.2.1)
+      jekyll-feed
+      jekyll-last-modified-at (~> 1.3.0)
+      jekyll-optional-front-matter (~> 0.3.2)
+      jekyll-postfiles (~> 3.1.0)
+      jekyll-redirect-from (~> 0.16.0)
+      jekyll-remote-theme (~> 0.4.3)
+      jekyll-seo-tag (~> 2.8.0)
+      jekyll-sitemap (~> 1.4.0)
+      katex
+      kramdown-math-katex (~> 1.0.1)
+      sass-embedded (~> 1.4.0)
+
 GEM
   remote: https://rubygems.org/
   specs:
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
+    classifier-reborn (2.2.0)
+      fast-stemmer (~> 1.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.9)
+    concurrent-ruby (1.1.10)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
+    ethon (0.15.0)
+      ffi (>= 1.15.0)
     eventmachine (1.2.7)
     execjs (2.8.1)
+    fast-stemmer (1.0.2)
     ffi (1.15.5)
     forwardable-extended (2.6.0)
+    google-protobuf (3.20.0)
+    gsl (2.1.0.3)
+    html-proofer (3.19.3)
+      addressable (~> 2.3)
+      mercenary (~> 0.3)
+      nokogiri (~> 1.12)
+      parallel (~> 1.3)
+      rainbow (~> 3.0)
+      typhoeus (~> 1.3)
+      yell (~> 2.0)
     http_parser.rb (0.8.0)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
@@ -39,15 +82,20 @@ GEM
       terminal-table (~> 2.0)
     jekyll-archives (2.2.1)
       jekyll (>= 3.6, < 5.0)
-    jekyll-feed (0.16.0)
-      jekyll (>= 3.7, < 5.0)
     jekyll-last-modified-at (1.3.0)
       jekyll (>= 3.7, < 5.0)
       posix-spawn (~> 0.3.9)
     jekyll-optional-front-matter (0.3.2)
       jekyll (>= 3.0, < 5.0)
+    jekyll-postfiles (3.1.0)
+      jekyll (>= 3.8.6, < 5)
     jekyll-redirect-from (0.16.0)
       jekyll (>= 3.3, < 5.0)
+    jekyll-remote-theme (0.4.3)
+      addressable (~> 2.0)
+      jekyll (>= 3.5, < 5.0)
+      jekyll-sass-converter (>= 1.0, <= 3.0.0, != 2.0.0)
+      rubyzip (>= 1.3.0, < 3.0)
     jekyll-sass-converter (2.2.0)
       sassc (> 2.0.1, < 3.0)
     jekyll-seo-tag (2.8.0)
@@ -56,7 +104,8 @@ GEM
       jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.1)
+    json (2.6.1)
+    kramdown (2.3.2)
       rexml
     kramdown-math-katex (1.0.1)
       katex (~> 0.4)
@@ -68,36 +117,51 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
+    mini_portile2 (2.8.0)
+    nokogiri (1.13.3)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    parallel (1.22.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     posix-spawn (0.3.15)
     public_suffix (4.0.6)
+    racc (1.6.0)
+    rainbow (3.1.1)
+    rake (13.0.6)
     rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.5)
     rouge (3.28.0)
+    rubyzip (2.3.2)
     safe_yaml (1.0.5)
+    sass-embedded (1.4.2)
+      google-protobuf (~> 3.19)
+      rake (>= 10.0.0)
     sassc (2.4.0)
       ffi (~> 1.9)
     terminal-table (2.0.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
+    typhoeus (1.4.0)
+      ethon (>= 0.9.0)
     unicode-display_width (1.8.0)
+    w3c_validators (1.3.7)
+      json (>= 1.8)
+      nokogiri (~> 1.6)
+      rexml (~> 3.2)
+    yell (2.2.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (~> 4.1)
-  jekyll-archives
-  jekyll-feed
-  jekyll-last-modified-at
-  jekyll-optional-front-matter
-  jekyll-redirect-from
-  jekyll-seo-tag
-  jekyll-sitemap
+  bundler
+  html-proofer (~> 3.0)
+  jekyll-feed!
   katex!
-  kramdown-math-katex
+  papicu!
+  w3c_validators (~> 1.3)
 
 BUNDLED WITH
    2.1.4