Update devDependencies and gems.

Gemfile

@@ -2,8 +2,8 @@ source 'https://rubygems.org'
 
 group :development, :test do
   gem 'jekyll', '~> 3.8.5'
-  gem 'jekyll-redirect-from', '~> 0.14.0'
+  gem 'jekyll-redirect-from', '~> 0.15.0'
-  gem 'jekyll-sitemap', '~> 1.2.0'
+  gem 'jekyll-sitemap', '~> 1.3.1'
-  gem 'jekyll-toc', '~> 0.9.1'
+  gem 'jekyll-toc', '~> 0.11.0'
   gem 'wdm', '~> 0.1.1', :install_if => Gem.win_platform?
 end

Gemfile.lock

@@ -4,7 +4,7 @@ GEM
     addressable (2.6.0)
       public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.4)
+    concurrent-ruby (1.1.5)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -29,27 +29,27 @@ GEM
       pathutil (~> 0.9)
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
-    jekyll-redirect-from (0.14.0)
+    jekyll-redirect-from (0.15.0)
-      jekyll (~> 3.3)
+      jekyll (>= 3.3, < 5.0)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-sitemap (1.2.0)
+    jekyll-sitemap (1.3.1)
-      jekyll (~> 3.3)
+      jekyll (>= 3.7, < 5.0)
-    jekyll-toc (0.9.1)
+    jekyll-toc (0.11.0)
-      nokogiri (~> 1.8)
+      nokogiri (~> 1.9)
-    jekyll-watch (2.1.2)
+    jekyll-watch (2.2.1)
       listen (~> 3.0)
     kramdown (1.17.0)
-    liquid (4.0.1)
+    liquid (4.0.3)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
     mini_portile2 (2.4.0)
-    nokogiri (1.10.1)
+    nokogiri (1.10.2)
       mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.1-x64-mingw32)
+    nokogiri (1.10.2-x64-mingw32)
       mini_portile2 (~> 2.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
@@ -73,9 +73,9 @@ PLATFORMS
 
 DEPENDENCIES
   jekyll (~> 3.8.5)
-  jekyll-redirect-from (~> 0.14.0)
+  jekyll-redirect-from (~> 0.15.0)
-  jekyll-sitemap (~> 1.2.0)
+  jekyll-sitemap (~> 1.3.1)
-  jekyll-toc (~> 0.9.1)
+  jekyll-toc (~> 0.11.0)
   wdm (~> 0.1.1)
 
 BUNDLED WITH

package.json

@@ -104,10 +104,10 @@
   },
   "devDependencies": {
     "@babel/cli": "^7.2.3",
-    "@babel/core": "^7.3.4",
+    "@babel/core": "^7.4.0",
-    "@babel/plugin-proposal-object-rest-spread": "^7.3.4",
+    "@babel/plugin-proposal-object-rest-spread": "^7.4.0",
-    "@babel/preset-env": "^7.3.4",
+    "@babel/preset-env": "^7.4.2",
-    "autoprefixer": "^9.4.9",
+    "autoprefixer": "^9.5.0",
     "babel-eslint": "^10.0.1",
     "babel-plugin-istanbul": "^5.1.1",
     "broken-link-checker": "^0.7.8",
@@ -115,7 +115,7 @@
     "clean-css-cli": "^4.2.1",
     "coveralls": "^3.0.3",
     "cross-env": "^5.2.0",
-    "eslint": "^5.14.1",
+    "eslint": "^5.15.3",
     "find-unused-sass-variables": "^0.3.2",
     "glob": "^7.1.3",
     "hammer-simulator": "0.0.1",
@@ -128,7 +128,7 @@
     "karma-coverage-istanbul-reporter": "^2.0.5",
     "karma-detect-browsers": "^2.3.3",
     "karma-firefox-launcher": "^1.1.0",
-    "karma-qunit": "^2.1.0",
+    "karma-qunit": "^3.0.0",
     "karma-sinon": "^1.0.5",
     "node-sass": "^4.11.0",
     "nodemon": "^1.18.10",
@@ -136,16 +136,16 @@
     "popper.js": "^1.14.7",
     "postcss-cli": "^6.1.2",
     "qunit": "^2.9.2",
-    "rollup": "^1.3.2",
+    "rollup": "^1.7.3",
     "rollup-plugin-babel": "^4.3.2",
-    "rollup-plugin-commonjs": "^9.2.1",
+    "rollup-plugin-commonjs": "^9.2.2",
     "rollup-plugin-node-resolve": "^4.0.1",
     "shelljs": "^0.8.3",
     "shx": "^0.3.2",
-    "sinon": "^7.2.5",
+    "sinon": "^7.3.1",
     "stylelint": "^9.10.1",
     "stylelint-config-twbs-bootstrap": "^0.3.0",
-    "uglify-js": "^3.4.9",
+    "uglify-js": "^3.5.2",
     "vnu-jar": "18.11.5"
   },
   "engines": {