diff --git a/Gemfile.lock b/Gemfile.lock
index 96fc5d1c..4c9acdef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
       minitest (>= 5.1)
       mutex_m
       tzinfo (~> 2.0)
-    addressable (2.8.1)
+    addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
     algolia_html_extractor (2.6.4)
       json (~> 2.0)
@@ -20,17 +20,17 @@ GEM
       httpclient (~> 2.8, >= 2.8.3)
       json (>= 1.5.1)
     base64 (0.2.0)
-    bigdecimal (3.1.4)
+    bigdecimal (3.1.6)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.11.1)
+    coffee-script-source (1.12.2)
     colorator (1.1.0)
     commonmarker (0.23.10)
-    concurrent-ruby (1.2.2)
+    concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
-    dnsruby (1.61.9)
-      simpleidn (~> 0.1)
+    dnsruby (1.70.0)
+      simpleidn (~> 0.2.1)
     drb (2.2.0)
       ruby2_keywords
     em-websocket (0.5.3)
@@ -40,26 +40,25 @@ GEM
       ffi (>= 1.15.0)
     eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
-    execjs (2.8.1)
-    faraday (2.7.4)
-      faraday-net_http (>= 2.0, < 3.1)
-      ruby2_keywords (>= 0.0.4)
-    faraday-net_http (3.0.2)
-    ffi (1.15.5)
-    ffi (1.15.5-x64-mingw32)
+    execjs (2.9.1)
+    faraday (2.9.0)
+      faraday-net_http (>= 2.0, < 3.2)
+    faraday-net_http (3.1.0)
+      net-http
+    ffi (1.16.3)
     filesize (0.2.0)
     forwardable-extended (2.6.0)
-    gemoji (3.0.1)
-    github-pages (228)
-      github-pages-health-check (= 1.17.9)
-      jekyll (= 3.9.3)
-      jekyll-avatar (= 0.7.0)
-      jekyll-coffeescript (= 1.1.1)
+    gemoji (4.1.0)
+    github-pages (231)
+      github-pages-health-check (= 1.18.2)
+      jekyll (= 3.9.5)
+      jekyll-avatar (= 0.8.0)
+      jekyll-coffeescript (= 1.2.2)
       jekyll-commonmark-ghpages (= 0.4.0)
-      jekyll-default-layout (= 0.1.4)
-      jekyll-feed (= 0.15.1)
+      jekyll-default-layout (= 0.1.5)
+      jekyll-feed (= 0.17.0)
       jekyll-gist (= 1.5.0)
-      jekyll-github-metadata (= 2.13.0)
+      jekyll-github-metadata (= 2.16.1)
       jekyll-include-cache (= 0.2.1)
       jekyll-mentions (= 1.6.0)
       jekyll-optional-front-matter (= 0.3.2)
@@ -86,20 +85,20 @@ GEM
       jekyll-theme-tactile (= 0.2.0)
       jekyll-theme-time-machine (= 0.2.0)
       jekyll-titles-from-headings (= 0.5.3)
-      jemoji (= 0.12.0)
-      kramdown (= 2.3.2)
+      jemoji (= 0.13.0)
+      kramdown (= 2.4.0)
       kramdown-parser-gfm (= 1.1.0)
       liquid (= 4.0.4)
       mercenary (~> 0.3)
       minima (= 2.5.1)
       nokogiri (>= 1.13.6, < 2.0)
-      rouge (= 3.26.0)
+      rouge (= 3.30.0)
       terminal-table (~> 1.4)
-    github-pages-health-check (1.17.9)
+    github-pages-health-check (1.18.2)
       addressable (~> 2.3)
       dnsruby (~> 1.60)
-      octokit (~> 4.0)
-      public_suffix (>= 3.0, < 5.0)
+      octokit (>= 4, < 8)
+      public_suffix (>= 3.0, < 6.0)
       typhoeus (~> 1.3)
     html-pipeline (2.14.3)
       activesupport (>= 2)
@@ -108,7 +107,7 @@ GEM
     httpclient (2.8.3)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
-    jekyll (3.9.3)
+    jekyll (3.9.5)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -130,11 +129,11 @@ GEM
       nokogiri (~> 1.6)
       progressbar (~> 1.9)
       verbal_expressions (~> 0.1.5)
-    jekyll-avatar (0.7.0)
+    jekyll-avatar (0.8.0)
       jekyll (>= 3.0, < 5.0)
-    jekyll-coffeescript (1.1.1)
+    jekyll-coffeescript (1.2.2)
       coffee-script (~> 2.2)
-      coffee-script-source (~> 1.11.1)
+      coffee-script-source (~> 1.12)
     jekyll-commonmark (1.4.0)
       commonmarker (~> 0.22)
     jekyll-commonmark-ghpages (0.4.0)
@@ -142,15 +141,15 @@ GEM
       jekyll (~> 3.9.0)
       jekyll-commonmark (~> 1.4.0)
       rouge (>= 2.0, < 5.0)
-    jekyll-default-layout (0.1.4)
-      jekyll (~> 3.0)
-    jekyll-feed (0.15.1)
+    jekyll-default-layout (0.1.5)
+      jekyll (>= 3.0, < 5.0)
+    jekyll-feed (0.17.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-gist (1.5.0)
       octokit (~> 4.2)
-    jekyll-github-metadata (2.13.0)
+    jekyll-github-metadata (2.16.1)
       jekyll (>= 3.4, < 5.0)
-      octokit (~> 4.0, != 4.4.0)
+      octokit (>= 4, < 7, != 4.4.0)
     jekyll-include-cache (0.2.1)
       jekyll (>= 3.7, < 5.0)
     jekyll-mentions (1.6.0)
@@ -221,12 +220,12 @@ GEM
       jekyll (>= 3.3, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    jemoji (0.12.0)
-      gemoji (~> 3.0)
+    jemoji (0.13.0)
+      gemoji (>= 3, < 5)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
     json (2.6.3)
-    kramdown (2.3.2)
+    kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
@@ -235,15 +234,17 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.8.1)
+    mini_portile2 (2.8.5)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    minitest (5.20.0)
+    minitest (5.22.2)
     mutex_m (0.2.0)
-    nokogiri (1.14.3)
-      mini_portile2 (~> 2.8.0)
+    net-http (0.4.1)
+      uri
+    nokogiri (1.16.2)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     octokit (4.25.1)
       faraday (>= 1, < 3)
@@ -251,13 +252,13 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     progressbar (1.11.0)
-    public_suffix (4.0.7)
-    racc (1.6.2)
+    public_suffix (5.0.4)
+    racc (1.7.3)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
-    rouge (3.26.0)
+    rexml (3.2.6)
+    rouge (3.30.0)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)
@@ -273,7 +274,7 @@ GEM
       unf (~> 0.1.4)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
-    typhoeus (1.4.0)
+    typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
@@ -281,9 +282,9 @@ GEM
       tzinfo (>= 1.0.0)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.8.2)
-    unf_ext (0.0.8.2-x64-mingw32)
+    unf_ext (0.0.9.1)
     unicode-display_width (1.8.0)
+    uri (0.13.0)
     verbal_expressions (0.1.5)
     wdm (0.1.1)
     webrick (1.8.1)