Update dependencies and gems.

Gemfile

@@ -1,8 +1,8 @@
 source 'https://rubygems.org'
 
-gem 'jekyll', '~> 3.7.3'
+gem 'jekyll', '~> 3.8.3'
 gem 'jekyll-avatar', '~> 0.6.0'
 gem 'jekyll-email-protect', '~> 1.0.3'
-gem 'jekyll-feed', '~> 0.9.3'
+gem 'jekyll-feed', '~> 0.10.0'
 gem 'jekyll-paginate', '~> 1.1.0'
 gem 'jekyll-sitemap', '~> 1.2.0'

Gemfile.lock

@@ -8,15 +8,15 @@ GEM
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
-    eventmachine (1.2.5)
-    eventmachine (1.2.5-x64-mingw32)
-    ffi (1.9.23)
-    ffi (1.9.23-x64-mingw32)
+    eventmachine (1.2.7)
+    eventmachine (1.2.7-x64-mingw32)
+    ffi (1.9.25)
+    ffi (1.9.25-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.7.3)
+    jekyll (3.8.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -32,7 +32,7 @@ GEM
     jekyll-avatar (0.6.0)
       jekyll (~> 3.0)
     jekyll-email-protect (1.0.3)
-    jekyll-feed (0.9.3)
+    jekyll-feed (0.10.0)
       jekyll (~> 3.3)
     jekyll-paginate (1.1.0)
     jekyll-sass-converter (1.5.2)
@@ -41,7 +41,7 @@ GEM
       jekyll (~> 3.3)
     jekyll-watch (2.0.0)
       listen (~> 3.0)
-    kramdown (1.16.2)
+    kramdown (1.17.0)
     liquid (4.0.0)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -50,14 +50,14 @@ GEM
     mercenary (0.3.6)
     pathutil (0.16.1)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.2)
+    public_suffix (3.0.3)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
-    rouge (3.1.1)
+    rouge (3.2.1)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
-    sass (3.5.6)
+    sass (3.5.7)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -68,12 +68,12 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (~> 3.7.3)
+  jekyll (~> 3.8.3)
   jekyll-avatar (~> 0.6.0)
   jekyll-email-protect (~> 1.0.3)
-  jekyll-feed (~> 0.9.3)
+  jekyll-feed (~> 0.10.0)
   jekyll-paginate (~> 1.1.0)
   jekyll-sitemap (~> 1.2.0)
 
 BUNDLED WITH
-   1.16.1
+   1.16.4