all: sync with master

client/.stylelintrc.js

@@ -0,0 +1,44 @@
+module.exports = {
+  rules: {
+      "selector-type-no-unknown": true,
+      "block-closing-brace-empty-line-before": "never",
+      "block-no-empty": true,
+      "block-opening-brace-newline-after": "always",
+      "block-opening-brace-space-before": "always",
+      "color-hex-case": "lower",
+      "color-named": "never",
+      "color-no-invalid-hex": true,
+      "length-zero-no-unit": true,
+      "declaration-block-trailing-semicolon": "always",
+      "custom-property-empty-line-before": ["always", {
+          "except": [
+              "after-custom-property",
+              "first-nested"
+          ]
+      }],
+      "declaration-block-no-duplicate-properties": true,
+      "declaration-colon-space-after": "always",
+      "declaration-empty-line-before": ["always", {
+          "except": [
+              "after-declaration",
+              "first-nested",
+              "after-comment"
+          ]
+      }],
+      "font-weight-notation": "numeric",
+      "indentation": [4, {
+          "except": ["value"]
+      }],
+      "max-empty-lines": 2,
+      "no-missing-end-of-source-newline": true,
+      "number-leading-zero": "always",
+      "property-no-unknown": true,
+      "rule-empty-line-before": ["always-multi-line", {
+          "except": ["first-nested"],
+          "ignore": ["after-comment"]
+      }],
+      "string-quotes": "double",
+      "value-list-comma-space-after": "always",
+      "unit-case": "lower"
+  }
+}