Update devDependencies and gems.

Gemfile

 source 'https://rubygems.org'
 
 group :development, :test do
-  gem 'jekyll', '~> 3.8.3'
+  gem 'jekyll', '~> 3.8.4'
   gem 'jekyll-redirect-from', '~> 0.14.0'
   gem 'jekyll-sitemap', '~> 1.2.0'
-  gem 'jekyll-toc', '~> 0.6.0'
+  gem 'jekyll-toc', '~> 0.7.1'
 end

Gemfile.lock

@@ -16,7 +16,7 @@ GEM
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.8.3)
+    jekyll (3.8.4)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -35,7 +35,7 @@ GEM
       sass (~> 3.4)
     jekyll-sitemap (1.2.0)
       jekyll (~> 3.3)
-    jekyll-toc (0.6.0)
+    jekyll-toc (0.7.1)
       nokogiri (~> 1.7)
     jekyll-watch (2.0.0)
       listen (~> 3.0)
@@ -47,9 +47,9 @@ GEM
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
     mini_portile2 (2.3.0)
-    nokogiri (1.8.4)
+    nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.4-x64-mingw32)
+    nokogiri (1.8.5-x64-mingw32)
       mini_portile2 (~> 2.3.0)
     pathutil (0.16.1)
       forwardable-extended (~> 2.6)
@@ -57,10 +57,10 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
-    rouge (3.2.1)
+    rouge (3.3.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
-    sass (3.5.7)
+    sass (3.6.0)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -71,10 +71,10 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (~> 3.8.3)
+  jekyll (~> 3.8.4)
   jekyll-redirect-from (~> 0.14.0)
   jekyll-sitemap (~> 1.2.0)
-  jekyll-toc (~> 0.6.0)
+  jekyll-toc (~> 0.7.1)
 
 BUNDLED WITH
-   1.16.3
+   1.16.6

package.json

@@ -97,19 +97,19 @@
     "popper.js": "^1.14.4"
   },
   "devDependencies": {
-    "@babel/cli": "^7.0.0",
-    "@babel/core": "^7.0.0",
+    "@babel/cli": "^7.1.2",
+    "@babel/core": "^7.1.2",
     "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
-    "@babel/preset-env": "^7.0.0",
+    "@babel/preset-env": "^7.1.0",
     "autoprefixer": "^9.1.5",
-    "babel-eslint": "9.0.0",
+    "babel-eslint": "^10.0.1",
     "babel-plugin-istanbul": "^5.1.0",
     "broken-link-checker": "^0.7.8",
     "bundlesize": "^0.15.3",
     "clean-css-cli": "^4.2.1",
     "coveralls": "^3.0.2",
     "cross-env": "^5.2.0",
-    "eslint": "^5.5.0",
+    "eslint": "^5.6.1",
     "find-unused-sass-variables": "^0.2.1",
     "glob": "^7.1.3",
     "htmllint-cli": "^0.0.7",
@@ -119,7 +119,7 @@
     "karma-browserstack-launcher": "^1.3.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-coverage-istanbul-reporter": "^2.0.4",
-    "karma-detect-browsers": "^2.3.2",
+    "karma-detect-browsers": "^2.3.3",
     "karma-firefox-launcher": "^1.1.0",
     "karma-qunit": "^2.1.0",
     "karma-sinon": "^1.0.5",
@@ -129,21 +129,21 @@
     "popper.js": "^1.14.4",
     "postcss-cli": "^6.0.0",
     "qunit": "^2.6.2",
-    "rollup": "^0.65.2",
+    "rollup": "^0.66.4",
     "rollup-plugin-babel": "^4.0.3",
     "rollup-plugin-node-resolve": "^3.4.0",
     "shelljs": "^0.8.2",
     "shx": "^0.3.2",
-    "sinon": "^6.2.0",
+    "sinon": "^6.3.5",
     "sri-toolbox": "^0.2.0",
-    "stylelint": "^9.5.0",
+    "stylelint": "^9.6.0",
     "stylelint-config-recommended-scss": "^3.2.0",
     "stylelint-config-standard": "^18.2.0",
     "stylelint-order": "^1.0.0",
-    "stylelint-scss": "^3.3.0",
+    "stylelint-scss": "^3.3.1",
     "uglify-js": "^3.4.9",
-    "vnu-jar": "^18.8.29",
-    "workbox-build": "^3.4.1"
+    "vnu-jar": "18.8.29",
+    "workbox-build": "^3.6.2"
   },
   "engines": {
     "node": ">=6"