Upgrading Jekyll version

.travis.yml

@@ -1,6 +1,10 @@
 language: ruby
 rvm:
 - 2.3.3
+before_install:
+  - bundle update listen
+install:
+  - bundle install --jobs=3 --retry=3 --full-index --deployment
 script:
 - "./scripts/build"
 - "./scripts/test"

Gemfile

@@ -9,7 +9,7 @@ ruby RUBY_VERSION
 #
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
-gem "jekyll", "3.3.1"
+gem "jekyll"
 
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
 gem "minima", "~> 2.0"

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.1)
+    activesupport (5.2.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -10,96 +10,102 @@ GEM
       public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
     colorize (0.8.1)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.4)
     cssminify2 (2.0.1)
+    em-websocket (0.5.1)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
     ethon (0.11.0)
       ffi (>= 1.3.0)
+    eventmachine (1.2.7)
     execjs (2.7.0)
-    ffi (1.9.25)
+    ffi (1.10.0)
     forwardable-extended (2.6.0)
-    html-proofer (3.9.2)
+    html-proofer (3.10.0)
       activesupport (>= 4.2, < 6.0)
       addressable (~> 2.3)
       colorize (~> 0.8)
       mercenary (~> 0.3.2)
-      nokogiri (~> 1.8.1)
+      nokogiri (~> 1.9)
       parallel (~> 1.3)
       typhoeus (~> 1.3)
       yell (~> 2.0)
     htmlcompressor (0.4.0)
-    i18n (1.1.0)
+    http_parser.rb (0.6.0)
+    i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.3.1)
+    jekyll (3.8.5)
       addressable (~> 2.4)
       colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 0.7)
       jekyll-sass-converter (~> 1.0)
-      jekyll-watch (~> 1.1)
-      kramdown (~> 1.3)
-      liquid (~> 3.0)
+      jekyll-watch (~> 2.0)
+      kramdown (~> 1.14)
+      liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
-      rouge (~> 1.7)
+      rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
     jekyll-feed (0.11.0)
       jekyll (~> 3.3)
-    jekyll-minifier (0.1.2)
+    jekyll-minifier (0.1.9)
       cssminify2 (~> 2.0)
-      htmlcompressor (~> 0.3)
-      jekyll (~> 3.0)
-      uglifier (~> 2.7)
+      htmlcompressor (~> 0.4)
+      jekyll (>= 3.5)
+      uglifier (~> 4.1)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
     jekyll-seo-tag (2.5.0)
       jekyll (~> 3.3)
     jekyll-sitemap (1.2.0)
       jekyll (~> 3.3)
-    jekyll-watch (1.5.1)
+    jekyll-watch (2.1.2)
       listen (~> 3.0)
-    json (2.1.0)
     kramdown (1.17.0)
-    liquid (3.0.6)
+    liquid (4.0.1)
     listen (3.1.5)
-      rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
-    mini_portile2 (2.3.0)
-    minima (2.1.1)
-      jekyll (~> 3.3)
+    mini_portile2 (2.4.0)
+    minima (2.5.0)
+      jekyll (~> 3.5)
+      jekyll-feed (~> 0.9)
+      jekyll-seo-tag (~> 2.1)
     minitest (5.11.3)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.0)
+      mini_portile2 (~> 2.4.0)
     parallel (1.12.1)
-    pathutil (0.16.1)
+    pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (3.0.3)
     rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
-    rouge (1.11.1)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    rouge (3.3.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
-    sass (3.6.0)
+    sass (3.7.3)
       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 (1.3.0)
+    typhoeus (1.3.1)
       ethon (>= 0.9.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (2.7.2)
-      execjs (>= 0.3.0)
-      json (>= 1.8.0)
+    uglifier (4.1.20)
+      execjs (>= 0.3.0, < 3)
     yell (2.0.7)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   html-proofer
-  jekyll (= 3.3.1)
+  jekyll
   jekyll-feed (~> 0.6)
   jekyll-minifier
   jekyll-seo-tag

_config.yml

@@ -27,7 +27,7 @@ github_username:  ultimatecoder
 # Build settings
 markdown: kramdown
 theme: minima
-gems:
+plugins:
   - jekyll-feed
   - jekyll-minifier
   - jekyll-sitemap