diff --git a/Gemfile.lock b/Gemfile.lock
index bc4d50e..3bf6aa4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,69 +11,79 @@ GEM
   specs:
     acme-client (0.6.2)
       faraday (~> 0.9, >= 0.9.1)
-    actioncable (5.1.2)
-      actionpack (= 5.1.2)
+    actioncable (5.2.4.3)
+      actionpack (= 5.2.4.3)
       nio4r (~> 2.0)
-      websocket-driver (~> 0.6.1)
-    actionmailer (5.1.2)
-      actionpack (= 5.1.2)
-      actionview (= 5.1.2)
-      activejob (= 5.1.2)
+      websocket-driver (>= 0.6.1)
+    actionmailer (5.2.4.3)
+      actionpack (= 5.2.4.3)
+      actionview (= 5.2.4.3)
+      activejob (= 5.2.4.3)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.1.2)
-      actionview (= 5.1.2)
-      activesupport (= 5.1.2)
-      rack (~> 2.0)
-      rack-test (~> 0.6.3)
+    actionpack (5.2.4.3)
+      actionview (= 5.2.4.3)
+      activesupport (= 5.2.4.3)
+      rack (~> 2.0, >= 2.0.8)
+      rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.2)
-      activesupport (= 5.1.2)
+    actionview (5.2.4.3)
+      activesupport (= 5.2.4.3)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.1.2)
-      activesupport (= 5.1.2)
+    activejob (5.2.4.3)
+      activesupport (= 5.2.4.3)
       globalid (>= 0.3.6)
-    activemodel (5.1.2)
-      activesupport (= 5.1.2)
-    activerecord (5.1.2)
-      activemodel (= 5.1.2)
-      activesupport (= 5.1.2)
-      arel (~> 8.0)
-    activesupport (5.1.2)
+    activemodel (5.2.4.3)
+      activesupport (= 5.2.4.3)
+    activerecord (5.2.4.3)
+      activemodel (= 5.2.4.3)
+      activesupport (= 5.2.4.3)
+      arel (>= 9.0)
+    activestorage (5.2.4.3)
+      actionpack (= 5.2.4.3)
+      activerecord (= 5.2.4.3)
+      marcel (~> 0.3.1)
+    activesupport (5.2.4.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     ansi (1.5.0)
-    arel (8.0.0)
+    arel (9.0.0)
     ast (2.4.0)
-    builder (3.2.3)
+    builder (3.2.4)
     codeclimate-test-reporter (1.0.8)
       simplecov (<= 0.13)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.6)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
+    crass (1.0.6)
     docile (1.1.5)
-    erubi (1.6.1)
+    erubi (1.9.0)
     faraday (0.14.0)
       multipart-post (>= 1.2, < 3)
-    globalid (0.4.1)
+    globalid (0.4.2)
       activesupport (>= 4.2.0)
     hashdiff (0.3.7)
-    i18n (0.8.4)
+    i18n (1.8.3)
+      concurrent-ruby (~> 1.0)
     json (2.1.0)
-    loofah (2.0.3)
+    loofah (2.6.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.7.0)
+    mail (2.7.1)
       mini_mime (>= 0.1.1)
-    method_source (0.8.2)
-    mini_mime (1.0.0)
+    marcel (0.3.3)
+      mimemagic (~> 0.3.2)
+    method_source (1.0.0)
+    mimemagic (0.3.5)
+    mini_mime (1.0.2)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
     minitest-rails (3.0.0)
@@ -85,42 +95,43 @@ GEM
       minitest (>= 5.0)
       ruby-progressbar
     multipart-post (2.0.0)
-    nio4r (2.2.0)
-    nokogiri (1.8.2)
+    nio4r (2.5.2)
+    nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     parallel (1.12.1)
     parser (2.5.0.2)
       ast (~> 2.4.0)
     powerpack (0.1.1)
     public_suffix (3.0.2)
-    rack (2.0.3)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rails (5.1.2)
-      actioncable (= 5.1.2)
-      actionmailer (= 5.1.2)
-      actionpack (= 5.1.2)
-      actionview (= 5.1.2)
-      activejob (= 5.1.2)
-      activemodel (= 5.1.2)
-      activerecord (= 5.1.2)
-      activesupport (= 5.1.2)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 5.1.2)
+    rack (2.2.3)
+    rack-test (1.1.0)
+      rack (>= 1.0, < 3)
+    rails (5.2.4.3)
+      actioncable (= 5.2.4.3)
+      actionmailer (= 5.2.4.3)
+      actionpack (= 5.2.4.3)
+      actionview (= 5.2.4.3)
+      activejob (= 5.2.4.3)
+      activemodel (= 5.2.4.3)
+      activerecord (= 5.2.4.3)
+      activestorage (= 5.2.4.3)
+      activesupport (= 5.2.4.3)
+      bundler (>= 1.3.0)
+      railties (= 5.2.4.3)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
-    railties (5.1.2)
-      actionpack (= 5.1.2)
-      activesupport (= 5.1.2)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
+    railties (5.2.4.3)
+      actionpack (= 5.2.4.3)
+      activesupport (= 5.2.4.3)
       method_source
       rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
+      thor (>= 0.19.0, < 2.0)
     rainbow (3.0.0)
-    rake (12.0.0)
+    rake (13.0.1)
     rubocop (0.52.1)
       parallel (~> 1.10)
       parser (>= 2.4.0.2, < 3.0)
@@ -135,7 +146,7 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    sprockets (3.7.1)
+    sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)
@@ -143,18 +154,18 @@ GEM
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     sqlite3 (1.3.13)
-    thor (0.19.4)
+    thor (1.0.1)
     thread_safe (0.3.6)
-    tzinfo (1.2.3)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     unicode-display_width (1.3.0)
     webmock (3.3.0)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
-    websocket-driver (0.6.5)
+    websocket-driver (0.7.2)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
+    websocket-extensions (0.1.5)
 
 PLATFORMS
   ruby