Update dependencies

Gemfile

@@ -1,30 +1,13 @@
 source "https://rubygems.org"
 
-# Hello! This is where you manage which Jekyll version is used to run.
+gem "jekyll"
-# 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", "~> 3.6.2"
-
-# This is the default theme for new Jekyll sites. You may change this to anything you like.
 gem "minima", "~> 2.0", git: 'https://github.com/rfwatson/minima-2col'
-
 gem "pygments.rb"
 
-# 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-feed", "~> 0.6"
   gem 'jekyll-seo-tag'
   gem 'jekyll-stealthy-share', git: 'https://github.com/rfwatson/jekyll-stealthy-share'
 end
 
-# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Gemfile.lock

@@ -18,18 +18,28 @@ GEM
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
+    concurrent-ruby (1.0.5)
+    em-websocket (0.5.1)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.5)
     ffi (1.9.18)
     forwardable-extended (2.6.0)
-    jekyll (3.6.2)
+    http_parser.rb (0.6.0)
+    i18n (0.9.3)
+      concurrent-ruby (~> 1.0)
+    jekyll (3.7.2)
       addressable (~> 2.4)
       colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 0.7)
       jekyll-sass-converter (~> 1.0)
-      jekyll-watch (~> 1.1)
+      jekyll-watch (~> 2.0)
       kramdown (~> 1.14)
       liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
-      rouge (>= 1.7, < 3)
+      rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
     jekyll-feed (0.9.2)
       jekyll (~> 3.3)
@@ -37,7 +47,7 @@ GEM
       sass (~> 3.4)
     jekyll-seo-tag (2.4.0)
       jekyll (~> 3.3)
-    jekyll-watch (1.5.1)
+    jekyll-watch (2.0.0)
       listen (~> 3.0)
     kramdown (1.16.2)
     liquid (4.0.0)
@@ -55,7 +65,7 @@ GEM
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
-    rouge (2.2.1)
+    rouge (3.1.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
     sass (3.5.5)
@@ -68,7 +78,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (~> 3.6.2)
+  jekyll
   jekyll-feed (~> 0.6)
   jekyll-seo-tag
   jekyll-stealthy-share!