- Optimization: Re-rerun image optimization per update

- Linting (ESLint): Adjust per now applied rules
- Testing: Accessibility test API update
- Docs: Clarify need for Node.js/npm being installed
- npm: Update devDeps and core-js-bundle copy; add new axe testing peer dep. axe-core

package.json

@@ -81,25 +81,26 @@
     "@babel/plugin-transform-modules-commonjs": "^7.4.4",
     "@babel/preset-env": "^7.4.5",
     "@mysticatea/eslint-plugin": "^10.0.3",
-    "axe-testcafe": "^1.1.0",
+    "axe-core": "^3.2.2",
+    "axe-testcafe": "^3.0.0",
     "babel-plugin-transform-object-rest-spread": "^7.0.0-beta.3",
-    "core-js-bundle": "^3.1.3",
-    "eslint": "5.16.0",
+    "core-js-bundle": "^3.1.4",
+    "eslint": "6.0.1",
     "eslint-config-ash-nazg": "7.0.1",
     "eslint-config-standard": "12.0.0",
-    "eslint-plugin-compat": "^3.1.1",
-    "eslint-plugin-eslint-comments": "^3.1.1",
-    "eslint-plugin-import": "2.17.3",
-    "eslint-plugin-jsdoc": "^8.0.0",
+    "eslint-plugin-compat": "^3.2.0",
+    "eslint-plugin-eslint-comments": "^3.1.2",
+    "eslint-plugin-import": "2.18.0",
+    "eslint-plugin-jsdoc": "^8.7.0",
     "eslint-plugin-markdown": "^1.0.0",
-    "eslint-plugin-no-use-extend-native": "^0.4.0",
+    "eslint-plugin-no-use-extend-native": "^0.4.1",
     "eslint-plugin-node": "9.1.0",
-    "eslint-plugin-promise": "4.1.1",
+    "eslint-plugin-promise": "4.2.1",
     "eslint-plugin-qunit": "^4.0.0",
     "eslint-plugin-standard": "4.0.0",
     "eslint-plugin-testcafe": "^0.2.1",
-    "eslint-plugin-unicorn": "^9.1.0",
-    "imageoptim-cli": "^2.3.5",
+    "eslint-plugin-unicorn": "^9.1.1",
+    "imageoptim-cli": "^2.3.6",
     "jamilih": "^0.45.0",
     "jsdoc": "^3.6.2",
     "load-stylesheets": "^0.8.0",
@@ -111,9 +112,9 @@
     "qunit": "^2.9.2",
     "regenerator-runtime": "^0.13.2",
     "remark-cli": "^6.0.1",
-    "remark-lint-ordered-list-marker-value": "^1.0.2",
-    "rollup": "1.15.0",
-    "rollup-plugin-babel": "^4.3.2",
+    "remark-lint-ordered-list-marker-value": "^1.0.3",
+    "rollup": "1.16.2",
+    "rollup-plugin-babel": "^4.3.3",
     "rollup-plugin-re": "^1.0.7",
     "rollup-plugin-terser": "^5.0.0",
     "sinon": "^7.3.2",