remove rack-jekyll (and do 'bundle update')

fixes #1150

Author: SethTisue

Gemfile

@@ -2,7 +2,6 @@ source 'https://rubygems.org'
 
 gem 'jekyll'
 gem 'kramdown'
-gem 'rack-jekyll'
 gem 'rake'
 gem 'jekyll-redirect-from'
 gem 'html-proofer'

Gemfile.lock

@@ -1,53 +1,48 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.4.3)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
-    colorize (0.8.1)
     concurrent-ruby (1.1.7)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
-    ethon (0.11.0)
+    ethon (0.12.0)
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
     ffi (1.13.1)
     forwardable-extended (2.6.0)
-    html-proofer (3.10.0)
-      activesupport (>= 4.2, < 6.0)
+    html-proofer (3.15.3)
       addressable (~> 2.3)
-      colorize (~> 0.8)
-      mercenary (~> 0.3.2)
-      nokogiri (~> 1.9)
+      mercenary (~> 0.3)
+      nokogumbo (~> 2.0)
       parallel (~> 1.3)
+      rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
     http_parser.rb (0.6.0)
-    i18n (0.9.5)
+    i18n (1.8.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.9.0)
+    jekyll (4.1.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
-      i18n (~> 0.7)
-      jekyll-sass-converter (~> 1.0)
+      i18n (~> 1.0)
+      jekyll-sass-converter (~> 2.0)
       jekyll-watch (~> 2.0)
-      kramdown (>= 1.17, < 3)
+      kramdown (~> 2.1)
+      kramdown-parser-gfm (~> 1.0)
       liquid (~> 4.0)
-      mercenary (~> 0.3.3)
+      mercenary (~> 0.4.0)
       pathutil (~> 0.9)
-      rouge (>= 1.7, < 4)
+      rouge (~> 3.0)
       safe_yaml (~> 1.0)
-    jekyll-redirect-from (0.14.0)
-      jekyll (~> 3.3)
-    jekyll-sass-converter (1.5.2)
-      sass (~> 3.4)
+      terminal-table (~> 1.8)
+    jekyll-redirect-from (0.16.0)
+      jekyll (>= 3.3, < 5.0)
+    jekyll-sass-converter (2.1.0)
+      sassc (> 2.0.1, < 3.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     kramdown (2.3.0)
@@ -58,38 +53,32 @@ GEM
     listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    mercenary (0.3.6)
+    mercenary (0.4.0)
     mini_portile2 (2.4.0)
-    minitest (5.14.1)
-    nokogiri (1.10.8)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
-    parallel (1.12.1)
+    nokogumbo (2.0.2)
+      nokogiri (~> 1.8, >= 1.8.4)
+    parallel (1.19.2)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.5)
-    rack (1.6.13)
-    rack-jekyll (0.5.0)
-      jekyll (>= 1.3)
-      listen (>= 1.3)
-      rack (~> 1.5)
-    rake (12.3.3)
+    rainbow (3.0.0)
+    rake (13.0.1)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
     rouge (3.22.0)
     safe_yaml (1.0.5)
-    sass (3.7.4)
-      sass-listen (~> 4.0.0)
-    sass-listen (4.0.0)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-    thread_safe (0.3.6)
-    typhoeus (1.3.1)
+    sassc (2.4.0)
+      ffi (~> 1.9)
+    terminal-table (1.8.0)
+      unicode-display_width (~> 1.1, >= 1.1.1)
+    typhoeus (1.4.0)
       ethon (>= 0.9.0)
-    tzinfo (1.2.7)
-      thread_safe (~> 0.1)
-    yell (2.0.7)
+    unicode-display_width (1.7.0)
+    yell (2.2.2)
 
 PLATFORMS
   ruby
@@ -100,7 +89,6 @@ DEPENDENCIES
   jekyll-redirect-from
   kramdown
   kramdown-parser-gfm
-  rack-jekyll
   rake
 
 BUNDLED WITH