Update devDependencies and gems.

Gemfile.lock

@@ -57,7 +57,7 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
-    rouge (3.6.0)
+    rouge (3.7.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.5)
     sass (3.7.4)

package.json

@@ -103,13 +103,13 @@
     "popper.js": "^1.15.0"
   },
   "devDependencies": {
-    "@babel/cli": "^7.5.0",
-    "@babel/core": "^7.5.4",
-    "@babel/plugin-proposal-object-rest-spread": "^7.5.4",
-    "@babel/preset-env": "^7.5.4",
+    "@babel/cli": "^7.5.5",
+    "@babel/core": "^7.5.5",
+    "@babel/plugin-proposal-object-rest-spread": "^7.5.5",
+    "@babel/preset-env": "^7.5.5",
     "autoprefixer": "^9.6.1",
     "babel-eslint": "^10.0.2",
-    "babel-plugin-istanbul": "^5.1.4",
+    "babel-plugin-istanbul": "^5.2.0",
     "broken-link-checker": "^0.7.8",
     "bundlesize": "^0.18.0",
     "clean-css-cli": "^4.3.0",
@@ -125,7 +125,7 @@
     "karma": "^3.1.4",
     "karma-browserstack-launcher": "1.4.0",
     "karma-chrome-launcher": "^3.0.0",
-    "karma-coverage-istanbul-reporter": "^2.0.5",
+    "karma-coverage-istanbul-reporter": "^2.1.0",
     "karma-detect-browsers": "^2.3.3",
     "karma-firefox-launcher": "^1.1.0",
     "karma-qunit": "^3.1.3",
@@ -144,7 +144,7 @@
     "shx": "^0.3.2",
     "sinon": "^7.3.2",
     "stylelint": "^9.10.1",
-    "stylelint-config-twbs-bootstrap": "^0.3.1",
+    "stylelint-config-twbs-bootstrap": "^0.4.0",
     "uglify-js": "^3.6.0",
     "vnu-jar": "19.6.7"
   },