diff --git a/Gemfile.lock b/Gemfile.lock
index 5a71aaf..b0948b5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,30 +14,33 @@ GIT
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (3.2.6)
-      i18n (~> 0.6)
-      multi_json (~> 1.0)
-    addressable (2.2.8)
-    chunky_png (1.2.5)
+    activesupport (6.1.7.5)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
     closure-compiler (1.1.6)
     coderay (1.0.7)
     coffee-script (2.2.0)
       coffee-script-source
       execjs
     coffee-script-source (1.3.3)
-    compass (0.12.2)
-      chunky_png (~> 1.2)
-      fssm (>= 0.2.7)
-      sass (~> 3.1)
+    concurrent-ruby (1.3.5)
+    contracts (0.17.2)
     daemons (1.1.8)
+    dotenv (3.1.7)
     em-websocket (0.3.8)
       addressable (>= 2.1.1)
       eventmachine (>= 0.12.9)
+    erubi (1.13.1)
     eventmachine (0.12.10)
-    execjs (1.4.0)
-      multi_json (~> 1.0)
-    ffi (1.0.11)
-    fssm (0.2.9)
+    execjs (2.10.0)
+    fast_blank (1.0.1)
+    fastimage (2.4.0)
+    ffi (1.17.1)
     guard (1.2.3)
       listen (>= 0.4.2)
       thor (>= 0.14.6)
@@ -45,101 +48,100 @@ GEM
       em-websocket (>= 0.2.0)
       guard (>= 1.1.0)
       multi_json (~> 1.0)
-    haml (3.1.6)
-    hike (1.2.1)
+    haml (6.3.0)
+      temple (>= 0.8.2)
+      thor
+      tilt
+    hamster (3.0.0)
+      concurrent-ruby (~> 1.0)
+    hashie (5.0.0)
     hpricot (0.8.6)
-    http_router (0.10.2)
-      rack (>= 1.0.0)
-      url_mount (~> 0.2.1)
-    i18n (0.6.0)
+    i18n (1.14.7)
+      concurrent-ruby (~> 1.0)
+    kramdown (2.5.1)
+      rexml (>= 3.3.9)
     libv8 (3.3.10.4)
-    listen (0.4.7)
-      rb-fchange (~> 0.0.5)
-      rb-fsevent (~> 0.9.1)
-      rb-inotify (~> 0.8.8)
-    maruku (0.6.0)
-      syntax (>= 1.0.0)
-    middleman (3.0.0)
-      middleman-core (= 3.0.0)
-      middleman-more (= 3.0.0)
-      middleman-sprockets (= 3.0.0)
-    middleman-core (3.0.0)
-      activesupport (~> 3.2.6)
-      bundler (~> 1.1)
-      listen (~> 0.4.7)
-      rack (~> 1.4.1)
-      rack-test (~> 0.6.1)
-      thor (~> 0.15.4)
-      tilt (~> 1.3.1)
-    middleman-more (3.0.0)
-      coffee-script (~> 2.2.0)
-      coffee-script-source (~> 1.3.3)
-      compass (>= 0.12.2)
-      execjs (~> 1.4.0)
-      haml (>= 3.1.6)
-      i18n (~> 0.6.0)
-      maruku (~> 0.6.0)
-      middleman-core (= 3.0.0)
-      padrino-helpers (= 0.10.7)
-      sass (>= 3.1.20)
-      uglifier (~> 1.2.6)
-    middleman-sprockets (3.0.0)
-      middleman-more (= 3.0.0)
-      sprockets (~> 2.1)
-      sprockets-sass (~> 0.8.0)
-    multi_json (1.3.6)
-    padrino-core (0.10.7)
-      activesupport (~> 3.2.0)
-      http_router (~> 0.10.2)
-      sinatra (~> 1.3.1)
-      thor (~> 0.15.2)
-      tilt (~> 1.3.0)
-    padrino-helpers (0.10.7)
-      i18n (~> 0.6)
-      padrino-core (= 0.10.7)
-    rack (1.4.1)
+    listen (3.9.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    memoist (0.16.2)
+    middleman (4.6.0)
+      middleman-cli (= 4.6.0)
+      middleman-core (= 4.6.0)
+    middleman-cli (4.6.0)
+      thor (>= 0.17.0, < 1.3.0)
+    middleman-core (4.6.0)
+      activesupport (>= 6.1)
+      addressable (~> 2.4)
+      bundler (~> 2.0)
+      coffee-script (~> 2.2)
+      contracts
+      dotenv
+      erubi
+      execjs (~> 2.0)
+      fast_blank
+      fastimage (~> 2.0)
+      haml (>= 4.0.5)
+      hamster (~> 3.0)
+      hashie (>= 3.4, < 6.0)
+      i18n (>= 1.6, < 1.15)
+      kramdown (~> 2.4)
+      listen (~> 3.0)
+      memoist (~> 0.14)
+      padrino-helpers (~> 0.15.0)
+      parallel
+      rack (>= 3)
+      rackup
+      sassc (~> 2.0)
+      servolux
+      tilt (~> 2.2)
+      toml
+      uglifier (>= 3, < 5)
+      webrick
+    minitest (5.25.5)
+    multi_json (1.15.0)
+    padrino-helpers (0.15.3)
+      i18n (>= 0.6.7, < 2)
+      padrino-support (= 0.15.3)
+      tilt (>= 1.4.1, < 3)
+    padrino-support (0.15.3)
+    parallel (1.26.3)
+    parslet (2.0.0)
+    public_suffix (6.0.1)
+    rack (3.1.12)
     rack-coderay (0.2.0)
       coderay (>= 0.8.312)
       hpricot (>= 0.8.1)
       rack (>= 1.0.0)
     rack-livereload (0.3.6)
       rack
-    rack-protection (1.2.0)
-      rack
-    rack-test (0.6.1)
-      rack (>= 1.0)
-    rb-fchange (0.0.5)
-      ffi
-    rb-fsevent (0.9.1)
-    rb-inotify (0.8.8)
-      ffi (>= 0.5.0)
+    rackup (2.2.1)
+      rack (>= 3)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.11.1)
+      ffi (~> 1.0)
     rdiscount (1.6.8)
-    sinatra (1.3.2)
-      rack (~> 1.3, >= 1.3.6)
-      rack-protection (~> 1.2)
-      tilt (~> 1.3, >= 1.3.3)
-    sprockets (2.4.5)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sprockets-sass (0.8.0)
-      sprockets (~> 2.0)
-      tilt (~> 1.1)
-    syntax (1.0.0)
+    rexml (3.4.1)
+    sassc (2.4.0)
+      ffi (~> 1.9)
+    servolux (0.13.0)
+    temple (0.10.3)
     therubyracer (0.10.1)
       libv8 (~> 3.3.10)
     thin (1.4.1)
       daemons (>= 1.0.9)
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
-    thor (0.15.4)
-    tilt (1.3.3)
-    uglifier (1.2.6)
-      execjs (>= 0.3.0)
-      multi_json (~> 1.3)
-    url_mount (0.2.1)
-      rack
+    thor (1.2.2)
+    tilt (2.6.0)
+    toml (0.3.0)
+      parslet (>= 1.8.0, < 3.0.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    uglifier (4.2.1)
+      execjs (>= 0.3.0, < 3)
+    webrick (1.9.1)
+    zeitwerk (2.7.2)
 
 PLATFORMS
   ruby