Housekeeping (#2520)

* enhance(project): Add .prettierrc to project
* chore(deps): Bump dependencies
* chore(view): Improve readability of the search form view
* chore(admin): Improve language used in the customize_register filter docblock
* chore(lint): Lint project assets
* chore(change-log): Improve/prepare the changelog for actual release
* chore(readme): Improve README feature list
* chore(readme): Update README theme directory structure
* chore(readme): Add GitHub sponsors badge
* chore(readme): Clean up various wording
* fix(ci): Fix failing tests
* fix(mix): Add index.php to purgecss scope (Supersedes #2423) (Credit @oxyc)

package.json

@@ -23,31 +23,31 @@
     "translate:js": "wp i18n make-json ./resources/languages --no-purge --pretty-print"
   },
   "devDependencies": {
-    "@tinypixelco/laravel-mix-wp-blocks": "^1.0.0",
-    "@wordpress/babel-preset-default": "^4.13.0",
-    "@wordpress/browserslist-config": "^2.6.0",
-    "@wordpress/dependency-extraction-webpack-plugin": "^2.5.0",
+    "@tinypixelco/laravel-mix-wp-blocks": "^1.1.0",
+    "@wordpress/babel-preset-default": "^4.17.0",
+    "@wordpress/browserslist-config": "^2.7.0",
+    "@wordpress/dependency-extraction-webpack-plugin": "^2.8.0",
     "babel-eslint": "^10.1.0",
-    "browser-sync": "^2.26.7",
+    "browser-sync": "^2.26.12",
     "browser-sync-webpack-plugin": "^2.0.1",
     "cross-env": "^7.0.2",
-    "eslint": "^6.8.0",
-    "eslint-plugin-import": "^2.20.2",
+    "eslint": "^7.7.0",
+    "eslint-plugin-import": "^2.22.0",
     "laravel-mix": "^5.0.4",
     "laravel-mix-copy-watched": "^2.2.4",
-    "laravel-mix-purgecss": "^5.0.0-rc.1",
+    "laravel-mix-purgecss": "^5.0.0",
     "npm-run-all": "^4.1",
-    "purgecss-with-wordpress": "^2.1.0",
+    "purgecss-with-wordpress": "^2.3.0",
     "rimraf": "^3.0.2",
-    "sass": "^1.26.3",
-    "sass-loader": "^8.0.2",
-    "stylelint": "^13.3.3",
+    "sass": "^1.26.10",
+    "sass-loader": "^9.0.3",
+    "stylelint": "^13.6.1",
     "stylelint-config-standard": "^20.0.0",
     "vue-template-compiler": "^2.6.11"
   },
   "dependencies": {
-    "bootstrap": "^4.5.0",
-    "jquery": "^3.5.0",
+    "bootstrap": "^4.5.2",
+    "jquery": "^3.5.1",
     "popper.js": "^1.16.1"
   }
 }