Update devDependencies and gems.

package.json

@@ -102,7 +102,7 @@
     "@babel/core": "^7.1.2",
     "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
     "@babel/preset-env": "^7.1.0",
-    "autoprefixer": "^9.1.5",
+    "autoprefixer": "^9.2.0",
     "babel-eslint": "^10.0.1",
     "babel-plugin-istanbul": "^5.1.0",
     "broken-link-checker": "^0.7.8",
@@ -110,7 +110,7 @@
     "clean-css-cli": "^4.2.1",
     "coveralls": "^3.0.2",
     "cross-env": "^5.2.0",
-    "eslint": "^5.6.1",
+    "eslint": "^5.7.0",
     "find-unused-sass-variables": "^0.2.1",
     "glob": "^7.1.3",
     "htmllint-cli": "^0.0.7",
@@ -124,18 +124,18 @@
     "karma-firefox-launcher": "^1.1.0",
     "karma-qunit": "^2.1.0",
     "karma-sinon": "^1.0.5",
-    "node-sass": "^4.9.3",
+    "node-sass": "^4.9.4",
     "nodemon": "^1.18.4",
     "npm-run-all": "^4.1.3",
     "popper.js": "^1.14.4",
     "postcss-cli": "^6.0.0",
-    "qunit": "^2.6.2",
-    "rollup": "^0.66.4",
+    "qunit": "^2.7.0",
+    "rollup": "^0.66.6",
     "rollup-plugin-babel": "^4.0.3",
     "rollup-plugin-node-resolve": "^3.4.0",
     "shelljs": "^0.8.2",
     "shx": "^0.3.2",
-    "sinon": "^6.3.5",
+    "sinon": "^7.0.0",
     "stylelint": "^9.6.0",
     "stylelint-config-recommended-scss": "^3.2.0",
     "stylelint-config-standard": "^18.2.0",